（16）如何正确书写化学方程式—2021-2022学年化学人教版九年级上册同步课时作业
※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完全正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/FB9A8F51CCB3F02EC1D7B122252A1481.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/54F7CC0A768CF608ED8FD12DFC5D8296.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/928DFE116B6A1ED7D651EE5121ED1E32.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/FA0994578F7DFD079E81282CB633871A.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9d0cd97174c84e7f8bd9e1da1ec85777/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0ffa03561ce64eda9e0162f236a74737/39A4E7279204460B2AA6059063091F6B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>铝在氧气中燃烧生成氧化铝。在这个反应中,铝、氧气、氧化铝的质量比是( )<br>A.27:32:102 B.9:8:17 C.27:24:43 D.4:3:2<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/28c7071263074f32a67e274418091826/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/b7eed98cd4f44d21965eeec58cdc2b79/13BE3A8E9AD13231B3AF68595C76C018.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>高铁酸钾(<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/12/F41EC0E15298DD3731A2DB4160A1D7A0.png"><br>)是一种新型、高效的多功能水处理剂,受热时发生如下反应<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/12/A015B730A66C141E9D6D3E145551ED32.png"><br>,则a、R分别是( )<br>A.4FeO<br>B.2<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/12/81E02897460BEC9D2C34F1614A4CC31C.png"><br>C.3<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/12/81E02897460BEC9D2C34F1614A4CC31C.png"><br>D.1<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/12/E1C68AD0DB83D1586FF758CDE81245FE.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/2a815caeaf484c19988b4999400ad715/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/bb0cddc0fd904f3f8a249b53148a2746/72A8FE9D1F45F9D816F44B772C4CDABA.png"><br><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.铁丝在氧气中燃烧:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/5B8F9322A2665EB16CEE901386A61BFF.png"><br>B.磷在氧气中燃烧:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/40E1D3AED6BC969F37F212984BE68BD2.png"><br>C.实验室用过氧化氢制取氧气:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/44E9E999C11D2A18D884DFAC8FC2033B.png"><br>D.氢气在氧气中燃烧:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/F4062A3016E196B6ADEA2A7B3C06945D.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/26f7ebb9ae834172aa421e42ecb47895/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/8428cd17912e4ab696eecb812d8efdc6/0A6977B8E063FE2C35048919AFA56E5D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>甲烷<img src="https://picture2.zhihuicn.com/testImage/2/2019/9/5/DAEC2984830B90572C36385D77883CAA.png"><br>在空气中完全燃烧生成二氧化碳和水,则化学计量数最简整数之比<img src="https://picture2.zhihuicn.com/testImage/2/2019/9/5/37D153F9E2DB720CD75513D804ECDE0A.png"><br>等于( )<br>A.1:1 B.1:2 C.16:32 D.16:64<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/d6be5fe2b07d4911ab911f3ed0ea9f25/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：较易<br>有一同学写出下列几道不完整的化学方程式,用序号回答问题。<br>①<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/41966ED15F4F75DF8ECD1F9CC8887A92.png"><br>②<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/FD81C16FF4C0DEA1748B398176D8293A.png"><br>③<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/260B0E4D6F3C003BD807F315AF176F9A.png"><br>④<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/2E39D01C669F7B0824FCD2B7B4E2F220.png"><br>⑤<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/5B490D139E09059C8F48F8B68A3FD395.png"><br>⑥<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/159A076240588D8446EED442E2FB478D.png"><br>1.化学式书写有错误的是。<br>2.未注明或注错反应条件的有。<br>3.没有配平的有。<br>4.“↑”或“↓”符号使用不当的有。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/add5ca6eae764134ad196a06f0a11c5a/8702DA6D6CD555DCDB672EA9CCA1CF9C.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：较易<br>配平下列化学方程式:<br>1.P+<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/39A933961F7EFD17BEE555B93E3489FA.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/9D4A767AC255622179B4D2EC3C64BE68.png"><br>2.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/C61A61569C4960D567B91273E10409EF.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/F8700E8B1D874390170C2A5D14B4C304.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/8F65ABA8A89BDD1C03B5303CBBE68A33.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/B7D216939A9EA4817D642094F90363C1.png"><br>3.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/DDA91BDE5103B4E5BAD690C4A29D7CF3.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/39A933961F7EFD17BEE555B93E3489FA.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/2AB942BEF7443D489AC3DAB2AB74D8A5.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/AA5DD1505F1D7A06A012CABC988FF45C.png"><br>4.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/2670132F576A2DA2AB5603FDDEF53F44.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/DA92CAD75EC6866F34C7459D7B45D3C3.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/C61A61569C4960D567B91273E10409EF.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/AB50DA95A0B1CD0D07E552BEDF604CD5.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/5a7aa3331fb541108193e522dbdb5f31/FC5D2D31011A1FD52C89C87539FAE00C.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0e71f6fbb8254192a0c9b0acf31a6034/F973BD34C56CCC81A357E410CB20BCF9.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>由于高铁列车车厢是密闭的空间,因此提供清洁的空气和保持车厢的卫生非常重要。<br>1.高铁酸钠(<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/4607B8771CBD0A9E0787DA560177D569.png"><br>)是高铁上常用的一种“绿色环保高效”的消毒剂。下面是一种制备高铁酸钠的反应原理:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/F919B20F66DA237A745192978EAE25A7.png"><br>,X的化学式为________。<br>2.某品牌的空气净化剂含有过氧化钠(<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/19/F7080B9F640B44DD0BFCC30933092F6C.png"><br>),它可以使车厢里的二氧化碳转化为碳酸钠和氧气,写出其反应的化学方程式:________。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/4d9ec2aad7694852859d43cdd695a03c/8180EE8F7CA16241ED580E6CF0D18A80.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/1d30150de8154df1bd5abb95560d1eed/C2C5D9A0ABC014413E5EECB6EE6BE280.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>根据题目信息书写有关化学方程式。<br>1.水是宝贵的自然资源,请写出水通电分解的化学方程式:_________。<br>2.小明做化学实验时,不小心手指沾上硝酸银溶液,过一段时间出现痕迹,很难洗去。询问老师后得知,硝酸银见光易分解,生成一种金属、红棕色气体(<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/20/4DFB8F0E078BDC07EF569A7A174E9CCB.png"><br>)和能供给呼吸的气体,请写出此反应的化学方程式:_________。<br>3.某化学兴趣小组在探究硫酸亚铁受热分解反应时,发现它的生成物有三种,氧化铁固体、二氧化硫和三氧化硫气体,该反应的化学方程式为_________。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f0fdd0dd15b843389dbf5b420bdd3349/23A5E13C6725A2D5AE6081B5D27FBC8A.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/afefa39a71a648e39a941f662bd07bc0/6C0F6DDF616126D166FF3395D5E83091.png"><br><br>
页:
[1]