2012年内蒙古包头市中考化学试卷(含解析版)
2012年内蒙古包头市中考化学试卷一、选择题(1~9题为单项选择题,每题2分;10~12题为多项选择题,每题至少有两个正确答案,全部选对得3分,选对但不全得1分.共27分.)1.(2分)下列变化中属于化学变化的是( )A.食物霉变B.矿石粉碎C.汽油挥发D.冰雪融化2.(2分)下列说法正确的是( )A.用氢氧化钠改良酸性土壤B.冰箱中放入活性炭,可以除去冰箱中异味C.将废弃塑料就地焚烧,以消除“白色污染”D.加高工厂的烟囱,以消除二氧化硫对环境的影响3.(2分)下列说法正确的是( )A.原子都是由质子、中子、电子三种粒子构成的B.分子与原子的主要区别是:分子大、原子小C.不同种元素之间的...
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