【題目】學(xué)習(xí)溶液的知識(shí)后,可以幫助我們正確認(rèn)識(shí)溶液的組成及物質(zhì)的溶解過(guò)程,下表是幾位同學(xué)對(duì)溶液的錯(cuò)誤認(rèn)識(shí),請(qǐng)你用熟悉的實(shí)例來(lái)否定其觀點(diǎn).

序號(hào)

錯(cuò)誤觀點(diǎn)

否定實(shí)例

(1)

溶液一定是無(wú)色的

(2)

均一、穩(wěn)定的液體一定是溶液

(3)

溶液中的溶劑一定是水

(4)

一種溶劑最多溶解一種溶質(zhì)

(5)

兩種液體混合后充分振蕩,一定得到溶液

【答案】(1)硫酸銅溶液是藍(lán)色的 (2)水是均一、穩(wěn)定的液體,但水不是溶液 (3)碘酒中酒精是溶劑 (4)在海水中有食鹽、氯化鎂等多種溶質(zhì) (5)把植物油放入水中充分振蕩后,形成乳濁液

【解析】本題考查對(duì)溶液的概念、組成、特征、性質(zhì)的認(rèn)識(shí).從溶液的定義看,只有一種或幾種物質(zhì)分散到另一種物質(zhì)中形成均一、穩(wěn)定的混合物才是溶液,即溶液中,溶質(zhì)可以是一種,也可以是多種,可以是固體、液體、氣體中的任意一種;溶劑也不一定是水;溶液具有均一、穩(wěn)定性,但不一定是無(wú)色的;溶液一定是混合物.

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