
八上自然2-2 溶液
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
Used 5+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
從 30%食鹽水溶液 300 mL 中取出 100 mL,則剩下溶液的濃度應為多少%?
2.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
下列哪種物質不能與水混合形成水溶液?
3.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
設 20℃時,100 公克的水最多可以溶解食鹽 36 公克;若在 200 公克的水中溶入 50 公克的食鹽,則此溶液是何種狀態的溶液?
4.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
下列哪一種方法可以提高硝酸鉀在定量的水中所能溶解的最大量?
5.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
已知二鉻酸鉀在水中溶解度是 15 公克/100 公克水,今在甲、乙、丙三燒杯內各盛水 50 mL,並分別加入二鉻酸鉀 10 公克、15 公克、20 公克,充分攪拌後,三燒杯內溶液濃度關係為何?
6.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
某生配製食鹽水溶液,當溶液達到飽和後,杯底尚留少許食鹽晶體,隔天中午發現食鹽結晶已消失,下列哪一項敘述比較能解釋此現象?
7.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
100 mL、溫度 25℃的水最多可溶解 45 公克硝酸鉀固體。欲使 5 公克硝酸鉀完全溶解於 10 mL 水中,須採用下列何種方式?
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