2012年甘肃省兰州市中考化学试卷(含答案)
2012年甘肃省兰州市中考化学试卷 一、选择题:本大题25小题,1~12小题,每题1分,13~25小题,每题2分,共38分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.(2012•兰州)下列变化中属于化学变化的是( ) A.苹果腐烂B.石蜡熔化C.酒精挥发D.蔗糖溶解2.(2012•兰州)实验室有一瓶标签残缺的试剂可能是浓盐酸,有同学提出打开瓶塞观察.这属于科学探究中的( ) A.猜想假设B.收集证据C.设计实验D.得出结论3.(2012•兰州)小彤同学报名参加了“2012兰州国际马拉松比赛活动”中的迷你马拉松项目.该同学锻炼过程中使用的下列物品中不含有机合成材料的是( ) ...
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