（8）物质组成的表示—2021-2022学年化学鲁教版（五四制）八年级全一册同步课时作业
※题型：单选题※知识点：单选题※试题难度：较易<br>兴奋剂的检测是体育运动中的一项重要检测。诺龙是兴奋剂的一种,其化学式为<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/323D65157F5106708AF5E502B368120E.png"><br>。下列有关说法正确的是( )<br>A.诺龙中含有氧分子<br>B.1个诺龙分子中含有46个原子<br>C.诺龙是由18个碳元素、26个氢元素、2个氧元素组成的<br>D.诺龙是由18个碳原子、26个氢原子、2个氧原子构成的<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/37c92bf7847a40969fa8370917ae5516/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/2e33ee99a4f94297a3f6e578cbb307df/1669C91366FB8171D18D6ED5FBC0CD51.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在太空舱里,常用<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/28/19410B7D30B428B9391290F17A662EE0.png"><br>作催化剂将宇航员呼出的<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/28/7002435560602C62060BA723DC55D86C.png"><br>转化为<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/28/43916A0CBDACF639905BC5CD89370C97.png"><br>,<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/28/19410B7D30B428B9391290F17A662EE0.png"><br>中Fe的化合价为+3,则Ni的化合价为( )<br>A.+4 B.+3 C.+2 D.+1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f1fa36423ffc45ac80709d401fe7de08/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/1dde34a798a445b9a21e969953310c82/D8BE0A3F7AA258810E9890E5A56C9920.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>氢是新型清洁能源,但难以储运。研究发现,镧和镍的一种合金是储氢材料。下图中的符号表示氢分子的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/20/47FA98239E56AEBEB292276CA3775FDE.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/20/6CF15D02A30884E2A5CC061BCBA5022A.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/20/86F65D4372C1BFBE70B989B13AE694A4.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/20/05EBED4637C34930B3D53DD4989ED8A6.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/d68e036b8f9b48d2bfc3ae1c1a3228a4/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>某同学书写的试剂标签如下所示,其中正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/22/04322AC2BF4565261CF33DF9D3020A77.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/22/04322AC2BF4565261CF33DF9D3020A77.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/22/3A1D492BD474094F2A1B11DA09CAC0D9.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/22/A458BC4F2478472F75890BEF639397E1.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/45b9bde45ec1459691b07087c1aedc10/01A39E48B8A67989A23F6887F26FCC64.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>符号“<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/D350503FAEB172B50F09D85EB5C5B0A3.png"><br>”表示( )<br>①氮气②氮元素③2个氮原子④氮气是由氮元素组成的⑤1个氮分子是由2个氮原子构成的⑥2个氮元素⑦1个氮分子A.①②④⑤ B.①④⑤⑦ C.②③④⑦ D.②④⑤⑦<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/0141978d9b1c4d6b92f0bb51089a61a2/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/38a4425f5a9643dc83aa24670dd7934a/6BE3E36521EC7AF61B7E18CE30774253.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列含氮化合物中,氮元素化合价由高到低排列的一组是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/C9A94ACB5C43F7C1C900AC4C2E9E3E25.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/2BC31DC584DBC4BB490EE4A999FF7103.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/EC6175A8EDEE687A8D4FDBE3A61CDF7B.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/18B55596F8A5788E12151591AC2F1A09.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/153ee2db292c4e52aaba02f3bc6f0145/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/e8f8f909e5ce41179fb197f053d0857e/CFA09C23CCC3BDD379B4CAFE2557ED59.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>化学用语中的数字在不同的位置上意义不同。<br>1.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/7DDA3E07C3263D1A7681C855714CF7D0.png"><br>中数字“2”的意义分别是第一个“2”表示:,第二个“2”表示:。<br>2.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/25/B0DE8437144F5EC2A2A70D2F9D398893.png"><br>中“2”表示的意义是。<br>3.2N中“2”表示的意义是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/db1d944e336e4802832256d27c48241b/C75859B3C1E47BB7A7D35DD2C46A3068.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/029d8e0355964556a55ac1847b78fe02/EBE6C23D598ECCADC3F4BB79FEEA0411.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>中国科学院“科学”号科考船,利用我国自主研发的深海激光拉曼光谱原位探测系统和深海热液温度探针,首次在海底倒置湖中观测到气态水的存在。倒置湖内有气态水、二氧化碳、甲烷、硫化氢等物质,这些物质共含有<br>种元素。硫化氢中硫元素的化合价是<br>其中氢元素和硫元素的质量比是<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/53a5e18739eb4ca1b922fdbaf3a6a2bc/496F1D9F229A4EB76C5F653B4E3F5587.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/68eacb2f5bbb4de5a617526b3abc3733/001AA332DD7101403B7E1A033A05DEB7.png"><br><br>
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