2018年山东省聊城市中考化学试卷及答案
第I卷(选择题 共40分)可能用到的相对原子质量:H一l C-12 0-16 Cl一35.5 Ca-40一、选择题(本题包括16个小题,共40分。每小题只有一个选项符合题意。1~8小题每题2分,9~16小题每题3分)1.下列物质属于纯净物的是A.白酒 B.碘盐 C.液氧 D.食醋2.我们生活在不断变化的物质世界中,下列变化属于化学变化的是A.车胎爆炸 B.剪纸成花 C.瓷碗破碎 D.食物腐烂3.下列物质的主要成分与化学式相符的是A.干冰 CO2 B.苏打 NaHCO3 C.熟石灰 CaO D.纯碱 NaOH4.空气是一种...
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