黑龙江省齐齐哈尔市2017年中考化学真题试题(含答案)
黑龙江省齐齐哈尔市2017年中考化学真题试题可能用到的相对原子质量:C-12O-16H-1Na-23Fe-56Zn-65S-32Cu-64一、选择题(本题共15小题,每小题2分,共30分。其中1~12小题,每题各有一个正确选项,13~15小题毎题各有一个或两个正确选项)1、下列变化中,属于物理变化的是A.干冰升华B.食品变质C.光合作用D.蜡烛燃烧2、请答题的同学深呼吸,平静一下情绪,刚才吸入的空气中含量最多的气体是A.氧气B.稀有气体C.氮气D.二氧化碳3、下列实验基本操作错误的是A.闻药品气味B.检查气密性C.测溶液pHD.稀释浓硫酸4、下列实验现象的描述错误的是A.硫在空气中燃烧产生淡蓝...
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