2021-2022学年九年级上册化学人教版常考实验小练（2）对氧气性质的探究
※题型：单选题※知识点：单选题※试题难度：较易<br>下列物质在氧气里燃烧,生成物为白色固体的是( )<br>A.硫 B.镁条 C.铁丝 D.木炭<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2013/a84e65c92fd842d7b573eb7b418264fb/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2013/13ba3e1574ea4289bda0310f30cd83cf/DA25C38E9B99FC8C1A030A9B9FCEDBF8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>从化学视角看“烟”、“雾”、“光”和“焰”是有区别的。下列实验现象错误的是( )<br>A.铁丝在氧气中剧烈燃烧,火星四射<br>B.磷在空气中燃烧产生大量白烟雾<br>C.木炭在氧气中燃烧发出白光<br>D.氢气在空气中燃烧产生淡蓝色火焰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/89123b55bdbb433394f213b9cfa44d12/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/911cb3999905439a9131754cd7caae22/D36A9682295C34447E82DC67214233D8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在一密闭的容器中,一定质量的炭粉与过量的氧气在点燃的条件下充分反应,容器内各相关量与时间(从反应开始计时)的对应关系正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/E7310E156668BBB862CB46490482B838.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/9299E9BD254187229A2FABF02D2B01A4.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/C795801ABDCBDE532B2BA5DC7274EA00.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/18/C27DA48FE582DA71741E4756D72673D0.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/57fddb7341434c47bae644bf6a0cf19b/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/ce9ec7d4ab6c42e49438b08df51d9140/BFB87C81134960C10DB8EC350DF48340.png"><br><br>
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