2021年湖南省岳阳市中考化学真题(原卷版)
2021年岳阳市初中学业水平考试试卷化学可能用到的相对原子质量:H-1C-12O-16C1-35.5Mg-24Zn-65Ca-40一、选择题(本题共15道小题,每小题3分,共45分。每小题只有一个选项符合题意)1.下列变化过程中涉及到化学变化的是A.蔗糖溶解B.胆矾的研碎C.酸雨腐蚀雕像D.水沸腾2.化学与我们的生产生活息息相关,下列说法正确的是A.空气中体积分数约占21%的是氧气B.食盐加碘可预防佝偻病、骨质疏松C.对煤最好的利用就是直接燃烧D.农业上,施用化肥、农药越多越好3.为了快速、安全地获得可靠的实验结果,下列实验操作正确的是A.读取液体体积B.向试管中加锌粒C.点燃酒精灯D.铁丝在...
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