10分鐘小測:第3章 海洋
Quiz
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
Chemistry Aristo
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
用下圖所示的裝置分離氯化銅(II) 溶液和銅的混合物。下列哪些有關這過程的陳述正確?
(1) 這過程涉及物理變化。
(2) 濾液在焰色試驗中產生藍綠色火焰。
(3) 殘餘物含有氯化銅(II) 固體。
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
把蔬菜等不同材料與水一起加熱,便可煮成湯。下列哪個方法可從湯中獲取水?
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
你現有一稀食鹽溶液。下列哪項或哪些方法可提升食鹽溶液的濃度?
(1) 把更多水加入溶液
(2) 把溶液加熱以除去一些水
(3) 把更多食鹽加入溶液
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列哪個過程會出現由藍色變為白色的顏色變化?
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
現需分離硫和鐵粉的混合物。硫和鐵粉在水和二硫化碳中的溶解度如下表所示。 下列哪些是用來分離硫和鐵粉的混合物的可行方法?
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
某固體在焰色試驗中產生淡紫色火焰,它在硝酸銀試驗中產生陰性結果。這固體可能是
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
透過結晶法可把固體從它的水溶液中提取出來。這固體須具有下列哪項性質?
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