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【334973】陕西渭南市2020-2021学年九年级化学上册期末试卷

时间:2025-01-30 09:17:34 作者: 字数:10950字
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2020-2021学年陕西渭南九年级上化学期末试卷

一、选择题

 

1. 下列说法或做法不正确的是 (        )

A.稀有气体可做电光源,体现了物质的化学性质

B.饼干在空气中变软是因为空气中含有水蒸气

C.用木炭炉烧烤时不断鼓入空气,可使木炭燃烧更剧烈、更充分

D.日常生活中,可以用肥皂水区别硬水和软水

 

2. 我们所处的世界是不断变化的物质世界,变化无处不在。下列过程中没有发生化学变化的是 (        )

A.木柴燃烧 B.钢铁生锈 C.冰雪融化 D.树叶腐烂

 

3. 下列图示中的“错误实验操作”与图下面对应的“可能产生的后果”不一致的是(        ) 

A. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 无法检验装置气密性

B. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 液体喷出

C. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 弄脏滴管污染原试剂

D. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 酒精溅出

 

4. 分类法是化学学科常见的思想方法之一。右图呈现的物质分类关系中,①与②是并列关系,③包含在②中。若②是纯净物,则③不可能是(       
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

A.冰水混合物 B.矿泉水 C.二氧化碳 D.液态氧

 

5. 对下列事实的解释合理的是 (        )

A.工业上分离液态空气制氧气——分子可以分成原子,原子再重新组合形成新的分子

B.用炭黑墨汁绘画经久不变色——碳的化学性质在任何条件下都不活泼

C.干冰升华为二氧化碳气体——状态变化,分子大小随之变化

D.金刚石和石墨的硬度存在明显差异——碳原子排列方式不同

 

6. 我国科学家研制出一种含镓元素( <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> )的催化剂—— <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,并在该催化剂表面成功将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 转化为碳氢化合物燃料。下列关于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 的说法中,正确的是 (        )

A.锌、镓、氧元素的质量比为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

B.由一种金属元素和两种非金属元素组成

C.二氧化碳转变为碳氢化合物燃料的反应前后, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 的质量和化学性质都不发生改变

D.其中氧元素的质量分数最大

 

7. 下列实验装置不能达到相应实验目的的是(       



 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>




 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>




探究影响分子运动速率的因素

探究蜡烛火焰各层温度的高低

探究水的组成

验证面粉粉尘能发生爆炸

A. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> B. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> C. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> D. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 

8. 逻辑推理是化学学习中常用的思维方法,下列推理正确的是(       )

A.氢气点燃前需要验纯,所以可燃性气体点燃前都需要验纯

B.分子、原子可以构成物质,所以物质一定是由分子、原子构成的

C. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 中氧元素的化合价为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,所以在所有化合物中氧元素的化合价均为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

D.稀有气体可做保护气,所以做保护气的一定是稀有气体

 

9. 在密闭容器中有甲、乙、丙、丁四种物质,在一定条件下反应,测得反应前及反应过程中两个时刻各物质的质量如图所示,图中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 分别表示相应物质的质量。下列说法正确的是(        )
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

A.丙一定是化合物

B. <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 的数值为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

C.反应过程中乙与丁发生改变的质量比为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

D.该反应为分解反应

二、解答题

 

如图是小明同学设计并制作的净水器。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1)如图中,能吸附水中色素和异味的物质是________

2)明矾可用于净水,其化学式为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,它的组成元素有________种。

3)沉淀、过滤、蒸馏等方法都可以净化水,其中能降低水的硬度的是________

 

随着经济的发展,能源与环境成为人们关注的焦点。

1)天然气、石油和________合称为三大化石燃料。

2)氢气被认为是最理想的清洁能源的原因是________________________

3)低碳经济是以较少的温室气体排放获得较大产出的新经济发展模式,下列做法中符合“低碳经济”理念的是________(填字母)。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .大力发展火力发电
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .改造或淘汰高能耗、高污染产业
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .优化建筑设计,增强室内自然采光,减少照明用电

 

类价二维图反应的是元素的化合价与物质类别之间的关系,构建类价二维图是化学学习的重要方法。如图是某同学绘制的关于碳元素的类价二维图。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 处氢化物是天然气的主要成分,其化学式为________

2)该类价二维图中,剧毒气体物质是________

3)下列有关碳的氧化物的说法不正确的是________(填字母)。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 能燃烧, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 不能燃烧
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 化学性质差异很大的原因是分子的构成不同
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .可用点燃的方法除去 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 中混有的 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .大气中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 的消耗途径主要是绿色植物的光合作用

 

高分五号”是我国首颗对大气中二氧化硫、二氧化氮、二氧化碳、甲烷等多个环境要素进行监测的卫星。

1)钛镍形状记忆合金可制作卫星天线。如图 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 是镍元素在元素周期表中的信息以及原子结构示意图。镍原子中的质子数为________ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 的数值是________
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
                  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

2)催化还原法是消除大气中氮氧化物污染的新工艺,反应的微观示意图如图 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,下列说法正确的是________(填字母)。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .反应前后分子的种类不变              <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .反应前后原子的种类发生改变
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .反应物和生成物中共有 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 种氧化物  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .反应中生成丁、戊的分子个数比为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

3)图 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 是木炭还原二氧化碳的微观过程示意图,根据质量守恒定律,请在右边变化后的框图中画出对应的微观粒子图。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
                     <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

 

氧气是重要的资源,某兴趣小组利用下列装置完成与氧气有关的实验。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1)实验一:测定空气中氧气的含量。己知装置气密性良好,实验前,图中左侧注射器内空气已排净,右侧注射器内空气体积为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
进行实验时,需交替缓慢推动两个注射器活塞的原因是__________________________
实验结束并恢复到室温后,注射器内剩余气体的体积约为________ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

2)实验二:探究氧气的性质。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 装置进行铁丝燃烧的实验,发生反应的化学方程式为________________________,集气瓶底部少量水的作用是________________________________________
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 装置中可观察到的现象是________________________________

 

某化学课外小组同学用下图所示实验探究质量守恒定律。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 实验中,加热细铜丝团一段时间后移走酒精灯,观察到铜丝表面变为黑色( <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ),细铜丝团一端会________(填“上升”或“下降”)。

2 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 实验中,观察到小气球先变鼓再变瘪,其中“变鼓”的原因是_______________________________________。该实验过程中,锥形瓶中物质的总质量随时间的变化关系如下图所示,正确的是________(填字母)。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

3 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 三组实验充分反应并冷却至室温后,天平不能平衡的是________(填字母)。

4)实验拓展:冬天常会看到机动车排气管后冒出团团“白气”(实际上是水的小雾滴),通过这一现象我们可以得出柴油或汽油中一定含有________元素。

 

实验室制取氧气,提供了下列药品和常用装置:
药品:①过氧化氢溶液   ②氯酸钾   ③二氧化锰
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1)装置 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 中,使用分液漏斗的优点是________________________

2)小明根据所提供的药品,选择氯酸钾和二氧化锰混合制取并收集一瓶较纯净的氧气,应选择的发生和收集装置是________(填字母)。

3)若小明选择药品①③制取氧气,发生反应的化学方程式为________________________________。若选用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 装置收集氧气,其验满的方法是________________________________________

4)某气体 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 可用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 装置收集,若改用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 装置收集,则气体 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 应从________(填“ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ”或“ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ”)口进。

 

实验设计是化学实验的重要环节,请根据下列实验要求回答相关问题。
【活动与探究一】用图 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 实验探究二氧化碳的性质。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1)如图甲所示,向一个收集满 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 气体的软塑料瓶中加入约 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 体积的水,立即旋紧瓶盖,振荡,产生的现象为________

2)如图乙所示,①、④是用紫色石蕊试液湿润的棉球,②、③是用紫色石蕊试液染成紫色的干燥棉球。实验中,④棉球变红、③棉球不变红说明使紫色石蕊变红的物质是________(填写物质名称)。④棉球比①棉球先变红的原因是________

【活动与探究二】用图 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 实验探究燃烧条件。
【查阅资料】白磷的着火点为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,棉花的着火点为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>
3)实验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> :将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 形管放在盛有 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 热水的烧杯中,关闭 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 、打开 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,从 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 形管左端管口通入 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,一段时间后,观察到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 型管右端裹有白磷的棉花开始燃烧,左端的普通棉花没有变化。该现象说明燃烧需要的条件之一是__________________________

4)实验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> :在上述实验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 燃烧过程中,关闭 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 、打开 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,将注射器中的液体推入锥形瓶中,一段时间后,发现燃烧着的棉花团很快熄灭,装置 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 中澄清石灰水变浑浊。则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 中产生气体发生反应的化学方程式为________________________________________

5)实验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> :关闭 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 、打开 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,再次通入 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,发现右端剩余的裹有白磷的棉花又能燃烧。对比实验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> ,可以得出可燃物燃烧的一个条件,下列灭火实例中原理是破坏该条件的是________(填字母)。
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .住宅着火,消防队员用高压水龙头向着火处喷水
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .烧菜时油锅着火迅速盖上锅盖
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> .发生森林火灾时,将火焰蔓延线路前方的小片树林砍掉

 

为测定混有少量杂质的高锰酸钾固体样品中高锰酸钾的质量分数,现进行下列实验:取 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 样品加热(杂质不反应),剩余固体质量与反应时间的关系如图所示。试计算:
 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a>

1)最多能生成氧气的质量为________ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/255/" title="学年" class="c1" target="_blank">学年</a> <a href="/tags/1105/" title="陕西" class="c1" target="_blank">陕西</a> <a href="/tags/1159/" title="化学" class="c1" target="_blank">化学</a> <a href="/tags/1491/" title="渭南" class="c1" target="_blank">渭南</a> 。 

2)该样品中高锰酸钾的质量分数。



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