化学基礎 第1章 1.物質の構成
Quiz
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Medium
桂一 内藤
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
物質を分類すると、大きくは純物質と混合物に分けられる。
以下の物質で純物質はどれでしょうか?
空気
海水
塩酸
水
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
以下の物質の中で、混合物はどれでしょうか?
鉱物
塩化水素
塩化ナトリウム
ドライアイス
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
空気中に酸素はどれくらいの割合含まれていますか?
18%
22%
78%
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
混合物の分離方法のうち、固体と液体に分ける方法を何と言いますか?
蒸留
ろ過
分留
抽出
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
混合物の分離方法のうち、液体に溶けた液体を分ける方法を何と言いますか?
蒸留
ろ過
分留
抽出
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
抽出とは、物質の何の違いを利用した方法ですか?
沸点
溶解度
吸着する力
粒子の大きさ
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
ある物質は、20℃の水には20g溶け、80℃の水には60g溶けます。
80℃の水に60g溶かした後、その水溶液を20℃まで冷却すると、何g再結晶しますか?
80g
20g
40g
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