2016年海南中考化学试题及答案
化学试题第1页共5页海南省2016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~12O~16Ca~40一、选择题(本大题共14个小题,每小题只有1个选项符合题意。每小题3分,共42分)1.右图为空气成分示意图(按体积分数计算),其中“x”代表的是()、A.氧气B.二氧化碳C.氮气D.稀有气体2.下列现象中属于化学变化的是()A.石蜡熔化B.酒精挥发C.玻璃破碎D.钢铁生锈3.生活中常接触到“含氟牙膏”、“碘盐”等物品,这里的“氟”、“碘”指的是()A.元素B.分子C.原子D.单质4.下列做法不.利.于.节能减排、保护环境的是()A.植树...
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