2013年西藏自治区中考化学真题
2013年西藏中考化学真题一、单项选择题(本题共15小题,每小题2分,共30分)1. 下列生活中的变化,只属于物理变化的是( )A 钢铁生锈 B 湿衣晾干 C 蜡烛燃烧 D 食物腐烂2. 月号为世界牛奶日.牛奶中的维生素有助于人体对钙的吸收,这里的钙是指( )A 分子 B 原子 C 元素 D 单质3. 下列物质属于纯净物的是( )A 碳酸饮料 B 空气 C 蒸馏水 D 青稞酒4. 将厨房中常用的四种调味品放入水中,不能形成溶液的是( )A 醋 B...
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