2018年中考化学真题分类汇编1物质的构成和变化考点4溶液1溶液的概念和特点(无答案).doc

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1溶液(18 本溪)2下列物质属于溶液的是A牛奶 B豆浆 C蒸馏水 D碘酒(18 潍坊)4下列物质不属于溶液的是( )A碘酒 B矿泉水 C白醋 D蒸馏水7(2018 广西省玉林市,题号 7,分值 2)下列饮品中,属于溶液的是A.纯净水 B.玉米汁 C.糖水 D.豆浆【答案】C【解析】一种或几种物质分散到另外一种物质中,形成的均一稳定的液体叫做溶液。溶液的基本特征是均一性和稳定性,溶液一定是混合物。纯净水是纯净物,不属于溶液;玉米汁和豆浆不均匀,不稳定,不属于溶液;只有糖水,是糖溶解于水中,有均一性和稳定性,属于溶液,所以 C 正确。【知识点】溶液的定义及其应用;溶液的基本特征

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