2021-2022学年九年级上册化学人教版常考实验小练（5）质量守恒定律的验证
※题型：单选题※知识点：单选题※试题难度：较易<br>下列实验可用于验证质量守恒定律的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/7/4070EFD7150575605C10631AABF474E2.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/7/7D057892340575F43C60FE4CACED08D4.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/7/EA48753F9A815580F31869DB40C9340C.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/7/DA931D447196550E7BA0EFC00FFCF09A.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/3977c9d24d0a497ba70fbc338f39042d/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/291994c68b1547218164111c8a2949fa/3341D8A1260B17FC051D479B77773EF4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为通过对红磷燃烧前后质量的测定验证质量守恒定律的实验,下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/22/0B74FE23309672CEEEDA4E62963E7F4A.png"><br>A.用红热的玻璃管引燃红磷,产生大量白色烟雾<br>B.实验中气球可以防止由于瓶中气压过大使橡胶塞冲开<br>C.实验取用红磷的量不足,会影响实验结果<br>D.红磷燃烧一段时间后会熄灭是由于温度低于了红磷的着火点<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/889088b3f5474df8b988154867ce01cf/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/9ceee7735c8c44fcb5c27072c88d752a/337817B9E2D42256A4D092F1ACE2E08D.png"><br><br>※题型：问答题※知识点：问答题※试题难度：中等<br>如下图所示为用白磷燃烧探究质量守恒定律的实验。小红同学用红热的细玻璃管引燃白磷,观察到<br>A<br>、<br>C<br>中气球的大小不同;将<br>C<br>重新放到天平上称量,仍然平衡。请回答下列问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/12/808598D851CC76E2581AA2501B274F0A.png"><br>1.实验中气球的作用,除了密闭装置之外,还可以防止_____。2.实验时若取用白磷的量不足,对实验的结果_____(选填“有”或“没有”)影响。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/66738d4150094d2199bd4ca7049c4aa9/70FF482E158AF6D5B16FDDA75086EC24.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ace24b36717d4d619ae08da9921ec2f2/A53F60EFFF16499EAA376C2F356A3258.png"><br><br>
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