
初二复习 第三章
Quiz
•
Science
•
8th Grade
•
Medium
Chin Tay
Used 214+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一桶海水放在阳光下几个小时,仍然没有晶体析出,在此过程中不变的量是( )。
A.溶液的质量
B.溶质的质量
C.溶剂的质量
D.溶液的质量百分比浓度
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
假如你的化纤衣物上沾上油漆,清洗衣服时应选下列溶剂中的( )。
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一定温度下,某物质的饱和溶液一定是( )。
A. 非常浓的溶液
B. 很稀的溶液
C. 增加该溶质,溶质还能继续溶解的溶液
D. 增加该溶质,溶质不能继续溶解的溶液
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
将少量下列物质分别加入到足量水中,充分搅拌后,不会分层的是( ) 。
A.植物油
B.泥沙
C.酒精
D.牛奶
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在20℃时,把15.3克氯化钾放入45克水中,完全溶解后溶液恰好达到饱和,则该温度下,氯化钾的溶解度是( )。
A.134克
B.15.3克
C.34克
D.40克
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列物质中,属于悬浮液的是( )。
A.钡餐
B.汽水
C.肥皂水
D. 水加食用油
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪组混合物可用丁达尔现象区分?
A.盐水和牛奶
B.泥水和碘酒
C.稀硫酸和酒精溶液
D.稀豆浆和蔗糖溶液
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