2009年枣庄市中考化学试卷及答案
2009年山东省枣庄市中考化学真题13.下图所示生活生产中的变化,其中属于物理变化的是()A葡萄酿成酒B气球扎破爆炸C木炭燃烧成灰烬D鞭炮爆炸14.比较氧气和二氧化碳,下列说法正确的是()A前者支持燃烧,可作燃料;后者不支持燃烧,可作灭火剂B前者能供给呼吸,动植物都离不了;后者不能供给呼吸,动植物都不需要C前者一个分子由两个氧原子构成,后者一个分子由一个碳原子和两个氧原子构成D在实验室中制取两种气体,前者不需要加热,后者需要加热15.由海水淡化生产饮用水,下列方法从原理上分析完全不可行的是()A利用太阳能将海水蒸馏淡化B加明矾使海水中的盐分沉淀而淡化C将海水通过一种高分子膜,以除去所含离子D使...
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