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【题目】学习溶液的知识后,可以帮助我们正确认识溶液的组成及物质的溶解过程,下表是几位同学对溶液的错误认识,请你用熟悉的实例来否定其观点.

序号

错误观点

否定实例

(1)

溶液一定是无色的

(2)

均一、稳定的液体一定是溶液

(3)

溶液中的溶剂一定是水

(4)

一种溶剂最多溶解一种溶质

(5)

两种液体混合后充分振荡,一定得到溶液

【答案】(1)硫酸铜溶液是蓝色的 (2)水是均一、稳定的液体,但水不是溶液 (3)碘酒中酒精是溶剂 (4)在海水中有食盐、氯化镁等多种溶质 (5)把植物油放入水中充分振荡后,形成乳浊液

【解析】本题考查对溶液的概念、组成、特征、性质的认识.从溶液的定义看,只有一种或几种物质分散到另一种物质中形成均一、稳定的混合物才是溶液,即溶液中,溶质可以是一种,也可以是多种,可以是固体、液体、气体中的任意一种;溶剂也不一定是水;溶液具有均一、稳定性,但不一定是无色的;溶液一定是混合物.

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