溶解

Quiz
•
Science
•
7th Grade
•
Hard
is npc
Used 4+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(甲)食鹽溶解在水中,食鹽水是溶液;(乙)汽水中的二氧化碳是溶質;(丙)碘酒中的酒精是溶劑;(丁) 50 mL的水與40 mL的酒精混合液中,酒精是溶劑。上列有關溶液敘述正確的是:
甲
甲乙
甲乙丙
甲乙丙丁
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖,在定溫時,甲、乙兩杯食鹽水各有1公克的食鹽沉澱,下列敘述何者正確?
甲、乙兩杯混合濃度相同
甲杯濃度較大
乙濃度較大
要使沉澱物完全溶解,乙杯需要加入的水比甲杯多
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在下列哪一種溫度時,一定量的水可以溶解最多二氧化碳?
20℃
30℃
40℃
50℃
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
汽水在下列條件中,何者的二氧化碳溶解度較大?
高壓,20℃
高壓,5℃
低壓,20℃
低壓,5℃
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
20 g的食鹽完全溶於80 g的水中,則其重量百分濃度為:
20%
25%
75%
80%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
金門高粱在酒瓶上標示了58°,這是表示:
重量百分濃度58%
體積百分濃度58%
容積莫耳濃度58%
重量莫耳濃度58%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一飽和硫酸鐵水溶液,如附圖所示。在溫度不變時若增加水量,充分攪拌後,仍有固體殘留,則下列敘述何者正確?
溶解量增加,顏色不變
溶解量不變,顏色改變
溶解量及顏色均不變
溶解量及顏色均改變
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