精品解析:湖南省邵阳市2021年中考化学试题(原卷版)
2021年邵阳市初中学业水平考试试题卷化学可能用到的相对原子质量:H-1 C-12 N-14 O-16 Na-23 Al-27 S-32 Cl-35.5 K-39Ca-40 Fe-56 Cu-64 Zn-65 Ba-137一、选择题:本大题共25个小题,每小题2分,共50分,每小题均只有一个符合题意的选项。1.“水是生命之源,氧气是生命之气”。氧气的下列性质中,属于化学性质的是A.能支持燃烧B.不易溶于水C.密度比空气略大D.无色气体2.空气是一种宝贵的自然资源。在空气的成分中,含量最多的是A.O2B.N2C.CO2D.稀有气体3.化学是一门以实验为基础的科学,进行实验时应注意安全、规范操作。...
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