河南省开封市兰考县2020届九年级上学期期中学业评价化学试卷
※题型：单选题※知识点：单选题※试题难度：容易<br>2019年10月1日,北京天安门前举行了盛大的国庆70周年阅兵仪式,下列情景中蕴含化学变化的是( )<br>A.彩球升空 B.载歌载舞 C.礼炮轰鸣 D.国旗飘扬<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/b4b4d249344442a8823c43271432331a/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/35bde8c3fd5c4e7ba5bea663d2b66524/D2466686B1C2EB9A1C12BD8109F7D6DB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>物质在下列变化中表现出来的性质不属于化学性质的是( )<br>A.电灯发光<br>B.镁能在空气中燃烧<br>C.铁在潮湿的空气中生锈<br>D.铜在潮湿的空气中生成铜绿<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/ee9a74845adb47c98d69b8882c917187/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/73d0bbfe39454370aee8ad10989e84bf/F403D0AF2C7DE43898769D63AD34BD87.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列属于纯净物的是( )<br>A.自来水 B.液氧<br>C.碳酸饮料 D.加热高锰酸钾后残留固体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/179d261d38d544c29c33154926dc6f1c/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ba58620e819e44a4b6c6973ae036c8c4/2009A12B2D891C57293A69C676C5A4E5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>石油没有固定的沸点,加热时不同沸点的物质分别气化、冷凝、分离后可得到汽油、煤油等产品,由此可以判定石油属于( )<br>A.化合物 B.混合物 C.单质 D.氧化物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/2e08a7c317954cb0940c86792bf0fe41/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/df5bb9ca89144f1e8051346525ce8fd4/5F5C11C8C077E10CAA65E695EAAE7C39.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列实验操作中,不正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/FAFDEAC98E9AB5D909B3520DD2B1123C.png"><br>取用固体粉末<br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/FD0DE30020D303E89A9FAE08F149D3FB.png"><br>滴加液体<br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/B2DF50945A63F8E70CBAF6CBC22253D9.png"><br>检验装置气密性<br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/BCE8A5DBD9D4D02A282CC66051B173F0.png"><br>加热液体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/84c1dc946217460492aa2f37ba0b52ff/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0050732fe7ed491bb88f6059544b7163/7EDBFBC971665962877EA379F00C069B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列实验相关现象的描述正确的是( )<br>A.磷在氧气中燃烧产生大量白色烟雾<br>B.铁丝在氧气中燃烧,火星四射,生成黑色固体<br>C.硫在空气中燃烧,发出明亮的蓝紫色火焰<br>D.蜡烛在氧气中燃烧生成二氧化碳和水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/ef264ec25f714e6a9e4b2039187ed202/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/4524731e1d7d4546967955d2d297d5a9/5468732AD9C1764D6F93424A1EAD6025.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>科学家最近制得了一种新型的氧分子<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/55A57297F7308AFBB9211CDF6F05DBE5.png"><br>,下列叙述正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/CE3FB2E68B350B28E5B76D176FE3FE33.png"><br>、<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/55A57297F7308AFBB9211CDF6F05DBE5.png"><br>都是由氧元素组成的单质<br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/55A57297F7308AFBB9211CDF6F05DBE5.png"><br>分子由4个氧元素组成<br>C.1个<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/55A57297F7308AFBB9211CDF6F05DBE5.png"><br>分子由2个<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/CE3FB2E68B350B28E5B76D176FE3FE33.png"><br>分子构成<br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/55A57297F7308AFBB9211CDF6F05DBE5.png"><br>是由<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/CE3FB2E68B350B28E5B76D176FE3FE33.png"><br>组成的混合物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/ff96a7186392495e9c082a75ce36aaf9/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/26599704d7ea436f8f43f933af5046c3/B31DBFCFFEE422B68E7CC25B6ECEAF65.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列说法中不正确的是( )<br>A.化学变化中原子不能再分<br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/19DB00263A67B64F8C686CD794139E8F.png"><br>在过氧化氢的分解反应中起催化作用<br>C.绿色植物在光照下吸收<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/3AB34B1B8224706C6E4369A324ED490A.png"><br>释放出<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/CE3FB2E68B350B28E5B76D176FE3FE33.png"><br>D.电器短路起火时,用水浇灭<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/5826f184474643e19148536ef245e6fd/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/721397dd289d410994fbdeb23f59b885/8E04E31A1427F8C9CE863B0A15E61EFB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列微粒可以直接构成物质的是( )<br>①质子②中子③电子④分子⑤原子⑥离子A.只有④ B.只有④⑥ C.①②③ D.④⑤⑥<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/e1b6ce14206b40719b19e5f9496ca45b/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/6188aadc337a47f5bf94a3d97149edd7/39E6F7B618F377618CE76C914C677084.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列说法正确的是()<br>A.物质只有跟氧气发生的反应才是氧化反应<br>B.工业上用分离液态空气的方法制氧气的过程是分解反应<br>C.氧化反应不一定是化合反应<br>D.凡生成两种或两种以上其他物质的反应都属于分解反应<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/56d8575baa574b9587fa54fe2e803e8a/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/b912799f81bd442ab6927b761a499b94/B66ED819A76F86270756DC9487F103EE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列说法正确的是( )<br>A.物质只有跟氧气发生的反应才是氧化反应<br>B.工业上用分离液态空气的方法制氧气的过程是分解反应<br>C.氧化反应不一定是化合反应<br>D.凡生成两种或两种以上其他物质的反应都属于分解反应<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/da6e66135ec444d89b41f64e6b9108bb/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/a1e8d23c3df14ea384a6c7622aa01a02/A345B3B894E7313F25216B694504382E.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>空气中各成分的体积分数,大致<br>______78%<br>_______21%<br>_______0.94%<br>;<br>______0.03%<br>、其他占<br>0.03%<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/4f0693f274fb496fa75a89d222789bb8/B82F3AEC5C40511B43DD6A2AB866CA86.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/4493384d4bbf42d0b51c0a76a2159362/9BFD92D9E4CFA158B245F968E327BB79.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>要使可燃物燃烧,需要满足下列条件:<br>_____<br>和<br>_____.<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f0da09e075574680b8ba4818c5401c0d/765AA76A3D2CD8F5D07EF51F2D94EDC0.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/dd45a0e5df264e3bb22aafb0846623ed/A7A1043693767B82E20EB50F547AF229.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>细铁丝在纯氧气中燃烧的文字表达式:<br>______________<br>,在实验中可以看到<br>___________<br>,放热,并生成黑色固体。做实验时要在集气瓶底放少量水的原因是<br>______________<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/fffb2d1bbba64aaf96e664d28591c4ee/1E469B2A60043293B5837886CF6FA68D.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/43e24af4e24f4a59b3ae5c1c21531105/40A331C75668AB29C40834F54094DDF0.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>地壳中含量最多的元素是<br>_____<br>;含量最多的金属元素是<br>_____.<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/d535e298729a44b999723cb3d719ab95/27AD68787EEDD0F8EA0DE1B893C6190A.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/cc515d504a694fb78973f73f4debe347/04DBA553843CDA0A49F1CA0239640F89.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>写出下列符号表示的意义:<br>“N”<br>的宏观意义:<br>___________<br>“N”<br>的微观意义:<br>___________<br>“2N”<br>表示:<br>________________<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/01e064086d024eb896ff17334b423bf5/772C54768E85FE36F006989637B5B197.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/36d24b7f105e46b2917530a66cef5c59/6142F0CB92E45E618903CB9EA6AF0039.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>实验步骤如下:<br>A<br>给试管加热;<br>B<br>用排水法收集氧气;<br>C<br>熄灭酒精灯;<br>D<br>装高锰酸钾于试管中;<br>E<br>将导管移出水面;<br>F<br>检查装置的气密性;<br>G<br>把试管固定在铁架台上<br>.<br>正确的顺序应是:<br>_____.<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/76c0178ab9524ff99cfd56f45cefb1c5/1120DE4E2A30D320D5858A7BC7E8F8BF.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/55843604acf148caa6c1cc0176a0c202/208DCB3313D041002BD0A8B8A83DCBC1.png"><br><br>※题型：实验题※知识点：实验题※试题难度：中等<br>如图是常见的气体发生装置和收集装置。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/534CEB1CE8B91A4CBF2B4139003D0ABE.png"><br>1.写出①﹣⑤所指仪器的名称:①_____;②_____;③_____;④_____;⑤_____。<br>2.实验室用高锰酸钾晶体制取氧气的发生装置可以选用_____,但是要在_____放一团蓬松的棉花,作用是防止_____。3.可以用C装置收集的氧气,原因是_____;还可用_____装置收集的氧气,原因是_____。4.利用双氧水、二氧化锰制取氧气可选用上述_____发生装置,发生反应的文字表达式为:_____,该反应为_____反应。二氧化锰在该反应中起_____作用。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/72c6e6c3a34a468bb98c49225ec65e82/5619E60A2F6CFE4A68CBDC32084C4FBD.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/cf4b8e749fc9470da00d2e769dce71ce/8F9868001E2F32120CF50D0AB81791EA.png"><br><br>※题型：问答题※知识点：问答题※试题难度：较易<br>已知一个氧原子的质量为<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/705FABB4A18091A77419AEE038C5AC93.png"><br>,一个碳﹣<br>原子的质量为<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/3/12/47E4955A37310DD5E852B9E5EC2723BB.png"><br>,则氧原子的相对原子质量为<br>_____.<br>(最后结果保留整数<br>)<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9c781bf529bc4b1a87cc80974883d8e6/9D052A4CA12F0EF278C87EC6CD61A14D.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/f3d502f0ad1c4b24a39ba00befb1946f/710E205498B088975C1F53072D8B394D.png"><br><br>
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