2009年江苏省镇江市中考化学试卷及答案
镇江市2009年初中毕业升学统一考试化学试卷可能用到的相对原子质量:H-1C-12N-14O-16S-32Cl-35.5Na-23K-39一、单项选择题(本题包括15小题,每小题2分,共30分。每小题只有一个选项符合题意)1.我们生活在千变万化的物质世界里。下列变化中,属于物理变化的是A.爆竹爆炸B.木炭燃烧C.钢水浇铸D.葡萄酿酒2.下列物质属于纯净物的是A.酱油B.香醋C.酸奶D.干冰3.生活离不开化学。下列做法正确的是A.不吃发霉变质的食品B.奶粉中添加三聚氰胺提高蛋白质的含量C.用甲醛溶液浸泡猪肉,防止变质D.亚硝酸钠有咸味,用于烹调食物4.材料是生产、生活的物质基础。下列物品与材料类...
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