2010年广西桂林市中考化学试卷
2010年广西桂林市中考化学试卷一、选择题(共25小题,每小题2分,满分50分)1.(2分)因为鱼肉含有丰富的( )A.蛋白质B.维生素C.油脂D.糖2.(2分)地壳中含量最多的金属元素是( )A.铁B.铝C.硅D.氧3.(2分)空气的成分中,氧气约占空气总体积的( )A.78%B.75%C.25%D.21%4.(2分)我们熟悉的这些物质属于纯净物的是( )A.干冰B.石灰浆C.食盐D.食醋5.(2分)生活处处有化学.下列变化过程有物理变化的是( )A.葡萄酿酒B.食品发霉C.水分蒸发D.煤气中毒6.(2分)下列化肥能与碱性物质混放或混用的是( )A.碳铵B.硝铵C.硫铵D.硫酸钾...
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