2021-2022学年九年级上册化学人教版暑假提前学（5）氧气
※题型：单选题※知识点：单选题※试题难度：容易<br>下列属于化合反应的是( )<br>A.加热氧化汞产生金属汞和氧气<br>B.蔗糖与水混合后得到糖水<br>C.红磷燃烧产生浓厚白烟<br>D.蜡烛在空气中燃烧<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/71432a0da25342919161ac8de1406916/06CA09E70C17EF8BA2D3B8C70D693953.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>下列反应中,既属于化合反应又属于氧化反应的是( )<br>A.二氧化碳+水<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/D95A02B634EECCA03DA56A445D11AB5E.png"><br>碳酸<br>B.木炭+氧气<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/F4FB185BBE36BBD031B5C577581DDAFF.png"><br>二氧化碳<br>C.氧化汞<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/2DBECBBB547DD7FBCF479D179033D073.png"><br>汞+氧气<br>D.石蜡+氧气<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/F4FB185BBE36BBD031B5C577581DDAFF.png"><br>二氧化碳+水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/28240d8eeb6f4cd5a37cf6d407acbd37/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/bf96f224043849d1b23ac2e5d98f5b70/3C29DCF0808508E4A9ADDF72EDA54450.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>能使带火星的木条复燃的气体是( )<br>A.二氧化碳 B.氮气 C.氧气 D.空气<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2013/e56cdb858364413fb8d87fb71416e057/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2013/b64c84a34dca4268a59640c6c4c75b64/C312B4A0B69F0979B42C1A165D4CD99B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于实验现象的描述,正确的是( )<br>A.铁丝在空气中剧烈燃烧,火星四射<br>B.红磷在空气中燃烧,产生大量白烟<br>C.木炭在氧气中燃烧,产生蓝色火焰<br>D.镁条在空气中燃烧,产生黄色火焰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/3a9c401b6f3744e5ac794e79b6c5a53f/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/bcc5902731ea450eb57589a5f7f514de/44FCADAF3088489262B355DE7B445498.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>氧气的化学性质比较活泼,能与多种物质反应。下列对有关反应的描述正确的是( )<br>A.在点燃的条件下,细铁丝在空气中剧烈燃烧,火星四射,生成黑色固体<br>B.在点燃的条件下,硫在氧气中燃烧,发出蓝紫色火焰,生成无色无味的气体<br>C.铁、硫、蜡烛在氧气中的燃烧都是化合反应<br>D.物质与氧气的反应属于氧化反应,氧气具有氧化性<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f9cea31ac4f444f3beccb33a78b50872/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/5411cc3c571b42dab44e1bdb83fa6632/53A32A5F706B3017752ECD2BDD13D660.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列变化过程中,不包含缓慢氧化的是( )<br>A.钢铁生锈 B.酒和醋的酿造<br>C.蔗糖的溶解 D.动植物的呼吸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/0594ab6699c04dc0a245687cff5b4499/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/80908bf6b04b42d8b743e5c1e0a3998b/F9A6B23348037F23260FBF4577C4147E.png"><br><br>
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