初二 第3章 水的溶解性
Authored by 1213 (Ind)
Science
1st Grade
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
30%糖水加进纯水稀释后，保持不变的是（ ）。
溶质的质量
溶剂的质量
溶液的质量
溶液的浓度
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
欲配制100g的20%酒精溶液，必须将ˍˍˍg的酒精溶在ˍˍˍg的水里。
100…..20
80…..20
20…..100
20…..80
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列有关溶剂的说法，那项是错误的？
只有水才能作为溶剂
水是最常用的溶剂
溶液一定是由溶质和溶剂组成的
能夠互相溶解的液体所组成的溶液，量多的称为溶剂
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在ˍˍˍ℃時，两种物质 I和III有着相同的溶解度。
12
28
33
48
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
50g的30%氯化钾溶液，加入100g水之后，溶液的质量百分比浓度变成多少？
30%
15%
10%
5%
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
某溶液在温度下降時，有晶体从溶液中析出。析出晶体后的溶液是ˍˍˍ。
不饱和溶液
饱和溶液
浓溶液
稀溶液
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
所谓溶解度是指ˍˍˍ。
在某个温度下，100克溶剂溶解某种溶质成饱和溶液时的溶质的质量
100克溶剂溶解某种溶质成饱和溶液时溶质的质量
100克溶剂溶解溶质成饱和溶液时溶液的质量
在某个温度下，100克饱和溶液中所含溶质的质量
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