化学 第4章
Authored by 津波真斉 津波真斉
Science
8th Grade
Used 2+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
うすい硫酸とうすい水酸化バリウム水溶液を混ぜたときにできる白い沈殿は，何という物質か。
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
うすい硫酸とうすい水酸化バリウム水溶液を混ぜた。混ぜる前後で全体の質量は変化するか。
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
炭酸水素ナトリウムとうすい塩酸を混ぜたときに発生する気体は何か。
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
炭酸水素ナトリウムとうすい塩酸を密閉容器の中で混ぜた。混ぜる前後で全体の量は変化するか。
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
化学変化の前後で、化学変化に関係する物質全体の質量は変化しないという法則を何というか。
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
2.4gの銅を空気中で加熱すると、3.0gの酸化銅ができた。何gの酸素と結びついたか。
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
銅と酸素が反応するときの質量の比（銅：酸素）を、もっとも簡単な整数で表しなさい。
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