2009年广东省中考化学试卷及答案
2009年广东省揭阳市初中毕业生学业考试化学试题可能用到的相对原子质量H:1C:12N:14O:16Na:23S:32Cl:35.5Ca:40一、选择题(本题包括16小题,每小题3分,共48分,每小题只有一个正确答案)1.刚学化学的兰兰对下列常见现象进行分析,她想其中发生了化学变化的是A.煮饭前米用水洗一洗B.冰箱中放入木炭后,异味消失C.自行车轮胎在烈日下爆裂D.食物变质2.今年入春至五月,我国旱情严重,政府组织开展了较多的人工降雨活动。下列物质可用于人工降雨的是A.食盐B.干冰C.蔗糖D.面粉3.下列图示中,正确的是A.点燃酒精灯B.取少量液体C.加热液体D.称量氯化钠4.“食品安全是大事...
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