2010年四川省绵阳市中考化学试卷(学生版)
2010年四川省绵阳市中考化学试卷一、选择题(共10小题,每小题3分,满分30分)1.(3分)下列过程中,没有发生化学变化的是( )A.将胆矾晶体研碎至细末B.铜丝在火焰上灼烧至黑色C.新鲜牛奶久置后变味D.人体组织消化葡萄糖2.(3分)下列有关H2、CH4、CO三种气体的描述,正确的是( )A.都具有还原性,其组成元素的原子都易失去电子B.与空气混合遇火易爆炸,点燃前都要检查纯度C.燃烧时火焰颜色相同,燃烧产物相同D.都是常见的可燃性气体,地壳中大量存在3.(3分)二氧化碳与人们的生产和生活有着广泛的联系,下列关于二氧化碳的认识中,正确的一组是( )①在地窖、枯井内二氧化碳含量会比较高...
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