5.2化学反应的表示—2021-2022学年化学鲁教版（五四制）八年级全一册随堂小测
※题型：单选题※知识点：单选题※试题难度：较易<br>铁在氧气中燃烧的化学方程式书写正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/F012FFF01C361F30D0AD8678C50C2097.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/61A3FF927A98F0C32F46816E80F11C6E.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/49168EEFE005197DF05CADA7B7FF88C5.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/C038CDEE8F5E694B2289716C057CBC2B.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/6b95f82e5c63403f938e050e060aae70/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列化学方程式书写正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/2/2A2E24971B1A9BC5C8E249BA8A927238.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/2/4672E4D9FB9E3233DF6409E2B3A269A1.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/2/8E927DB2CF05EA6A7FE2CE930E10A657.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/2/1A1F9371CA84D54088606845B73F48D9.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/b0117b9e6396454d8d57fb10c0114131/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/1549f3852a4e4faf8f2916839532299b/DEBC0D2C44B83C5790414398BF773CDF.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>从<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/10/5E19D727E4F6EAC8A1EC8FC757AE7A3C.png"><br>中获取的信息错误的是( )<br>A.在反应前后,元素的种类没有变化<br>B.在常温下氢气与氧气混合就可以发生反应<br>C.4g氢气与32g氧气完全反应,可以生成36g水<br>D.在反应前后,氢原子和氧原子的数目都没有改变<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/7a62e899db724fc59b2abd1495faf55d/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/7f2716b171254a8b9f592f121345cdf9/130844D344E6464F3939347D1C5C5E0F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下图中四位同学正在讨论某一化学方程式表示的意义,他们所描述的化学方程式是( )<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/035EBC3EDA66467C071EBB9604F83FA0.png"><br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/9CAEBBB2A54AF74A95559172F0D7966A.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/90AA1FDF37006A21EB184B323DD05CD4.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/5E19D727E4F6EAC8A1EC8FC757AE7A3C.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/511F7EF504B27E16AE249D3AF5CD881E.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9f08ba7c8c1246a78477540892a061ab/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>根据化学方程式不能获得的该反应的信息是( )<br>A.化学反应的快慢 B.生成物<br>C.反应条件 D.反应物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/888d7e6488d94c63952948edb04fe839/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>我国研制的用于航天飞船的固体推进剂是铝粉与高氯酸铵的混合物。点火时,高氯酸铵发生如下反应:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/24/5E225FA8EF752778A6278E96E3C27FB5.png"><br>,则化学计量数<br>b<br>为( )<br>A.1 B.2 C.3 D.4<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/44309a2ff24241c1bc0831571c1a0d5f/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/c46031d397aa4ee5abace8f5db8d26b9/84BFFACB26B8C88ACA339AF4A5DEBC08.png"><br><br>※题型：问答题※知识点：问答题※试题难度：较易<br>有一同学写出下列几个化学方程式,用编号回答:<br>①<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/50C743FD76FC6C270AEBA8A7F5CE0405.png"><br>②<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/FC7E09C121811EB8962B6C5536F5FA8F.png"><br>③<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/8D8A634FCFC358201CCF0BD15F700E00.png"><br>④<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/B3FA14463F4D0C3D32CD30E2426D17A5.png"><br>⑤<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/6115621AC5D49353CAC4A5623922D39D.png"><br>⑥<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/27/A3114BE9180308DC63D28D2BB478E64F.png"><br>1.化学式书写有错误的是。2.未注明或注错反应条件的有。3.没有配平的有。4.“↑”或“↓”符号使用不当的有。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/b5c0c7ef96d6405e874f416ff716fa87/4E76E600306A5A732162C0CDE6DDA444.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/90287a7c5b904eefb6640c4d13aeaeee/705F8765845711B5A822BC4DF0ABE97F.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>写出符合要求的化学方程式<br>1.铁丝在氧气中燃烧:__________。<br>2.生成水的化合反应:__________。<br>3.生成水的分解反应:__________。<br>4.反应物是水的分解反应:__________。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/04f499f2484747a9899b9605eb3fb130/3E496F9413E0D07DF51A3805BC639E6A.png"><br>解析<br>略<br>
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