2014年海南中考化学试题及答案
海南省2014年初中毕业生学业水平考试化学科试题(考试时间:60分钟满分:100分)可能用到的相对原子质量:H—1C—12N—14O—16一、选择题(本大题共14小题,每小题只有一个选项合题意,每小题3分,共42分)1.2014年-6·5一世界环境日中国主题为:“向污染宣战”。下列有关环境的说法不正确的是:A.PM2.5是指大气中直径小于或等于2.5μm的颗粒物B.雾霾是一种自然现象,对人体健康影响不大C.二氧化碳是主要的温室气体之一D.汽车尾气是城市空气的污染源之一2.在课堂上,老师演示了右图所示实验。容器A中溶液变红.B中溶液不变色,该现象说明:A.分子可以再分B.分子在不断地运动C.分子...
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