周测（八）质量守恒定律与化学方程式——2021—2022学年人教版九年级化学上册
※题型：单选题※知识点：单选题※试题难度：容易<br>下列化学方程式书写正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/4/42E1C751C24075F11E5565BC2E45C874.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/4/7A013F1C806AFEACC02899BFB64EB6F5.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/4/38D52E27C8AEB6531A221564475FF9DF.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/4/F87106200DB1310F8719B6E2952868B7.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/504a9102a6914beeaad37d0e25391454/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/7815dfc8e9ce43b89a3c1a9d770281a3/D1D7B90FA31A89162B88DED37737D639.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某化学反应的微观示意图如图所示(不同小球代表不同的原子),下列说法中不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/17C880F3AA24FB1E0C16414EF0724F3C.png"><br>A.在此图示变化中共有四种分子<br>B.该图示变化中所有元素的化合价都没有变化<br>C.原子是化学反应中的最小粒子<br>D.反应前后物质的质量总和不变<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/3eecefce3cb74de999605d82557dcdcc/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/833bbc840ac74ad8ab49a6d9f2d62141/2F6FB700B098AE6A823481DC49D877BB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列反应的类型,与如图所示微观变化的化学反应类型一致的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/716C3D531AF44FDFFB741C992535E6CA.png"><br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/93ED550BB2C49379E0A7FDD25AE6DBAF.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/088C56C4685E07839B5DD549DBBA0180.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/F9C390CBBC43FADC568254C7B227A0E1.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/9DC278320A478142F4EAAA7ED11DC7D9.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/6f1de06fe5354d6cb69f0f1af59ba1aa/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ad9d30aa401c4f45a44ab8009c468fad/E8ECD8E985F1E8EBD7F79D23A1A57565.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>化学方程式<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/209DD07A0632689EC9967EAB4BA805A0.png"><br>中,生成物C和D的质量比为9:8,若A和B的混合物34g充分混合后恰好完全反应。则生成物C的质量是( )<br>A.8g B.16g C.9g D.18g<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/e04390def2c345b3839dc3c06339e21d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>在化学反应<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/23/3FA6B345DDCD328892E073D4840CC944.png"><br>中,A与<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/23/8E8C6B8B722DCFCF690B24FF89EF9297.png"><br>反应的质量关系如图所示,现将6gA和8g<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/23/8E8C6B8B722DCFCF690B24FF89EF9297.png"><br>充分反应,则生成AB的质量是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/23/DF5FE583CFB6A243FA86096E4316F3E4.png"><br>A.9g B.11g C.12g D.14g<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/0c0b62e24e5145f4bcf286c46d3863ad/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/826b06155c1640979425b1731365e649/29BCB351C2B87157237B2B0219D19156.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>金属单质M与非金属单质硫发生反应:<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/2/BECFA4D357E58E1B045B7D894B0FBEBE.png"><br>。甲、乙两组学生在实验室分别进行该实验,加入的M和硫的质量各不相同。充分反应后,实验数据记录如下表,则M的相对原子质量是( )<br><tbody><br>M的质量/g<br>S的质量/g<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/9/2/E2CA2D751F81166ADA5784131E2A908D.png"><br>的质量/g<br>甲<br>6.0<br>2.5<br>7.5<br>乙<br>7.0<br>1.5<br>7.5<br></tbody><br>A.64 B.56 C.39 D.23<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/cf4741cb3b174069bcc3900a165906b4/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/3d642b21db8341b6845fdb31dda15f3a/874698A397C6146EC21D6B85BF9AA998.png"><br><br>※题型：实验题※知识点：实验题※试题难度：中等<br>利用加热高锰酸钾的方法,验证化学反应中质量守恒定律。如图,小科将适量高锰酸钾装入试管,塞入一团棉花并测出试管、棉花与药品的总质量为<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/B7CF316158CE6B89AE375D30CF5A42AE.png"><br>。加热使之充分反应后,测得量筒中气体体积为<br>V<br>,再次测得反应装置与物质总质量为<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/A6597A662F39E111A6A0D7BFE69729CC.png"><br>,已知常温常压下氧气密度为<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/4856D013151867B871862ED70E2633BD.png"><br>。据此请回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/696889E79D78668C98C186862A55D2D5.png"><br>1.实验中用量筒收集气体的好处是。<br>2.实验中,试管口内壁附着紫红色小液滴,请解释产生该现象的原因:。<br>3.根据实验数据计算发现:<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/546995D76963F6C6E1976711D4CB99AC.png"><br>,与质量守恒定律不符。造成这一实验结果的原因分析正确的是(填字母)。A.试管中高锰酸钾没有完全分解B.导管口连续均匀冒气泡时才收集气体C.未调节量筒内外液面相平就读数D.停止加热时,先将导管移出水面,再熄灭酒精灯<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/046eabeff5fb4719b8d5b155c54b310f/7C32A2A67FF4299D20111E21AC2D19CA.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/a7715b54de1744978915f2ed9e88dcd4/EBD2B36F55A87AF822590AC18DE8900F.png"><br><br>※题型：计算题※知识点：计算题※试题难度：中等<br>实验室加热氯酸钾与<br>0.3g<br>二氧化锰混合物制取氧气,加热前称得混合物总质量为<br>24.8g<br>,加热一段时间后,称得剩余固体质量为<br>20.0g<br>,试回答下列问题。<br>1.反应产生氧气的质量为g。<br>2.计算反应后剩余固体中氯化钾的质量。<br>3.剩余固体中钾元素质量分数是多少?<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/0badb1fd8eee4efb8224858684dbd108/D7E13CF7101769D998B7D1FABDE562A1.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/44928780cf4340b6a86682c815653794/C93C63DD023231B6F6CE1795CBD33AE3.png"><br><br>
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