中2化学 質量と還元

Quiz
•
Chemistry
•
8th Grade
•
Medium
かおり みやもと
Used 11+ times
FREE Resource
13 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
化学変化の前後で、物質全体の質量は変化しない。
このことを( )の法則という。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
マグネシウムと、化合する酸素と、酸化マグネシウムの質量比
4:1:5
2:3:5
1:4:5
3:2:5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
銅と、化合する酸素と、酸化銅の質量比
4:1:5
2:3:5
1:4:5
3:2:5
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
うすい硫酸とうすい水酸化バリウム水溶液を混ぜ合わせると、白色の沈殿ができた。
この沈殿の物質は何か。物質名を答えなさい。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1.2gのマグネシウムを十分に加熱し、すべて反応したとき、
できた酸化マグネシウムは何gか。
2.0g
1.5g
0.8g
2.4g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
酸化マグネシウム7.0g中のマグネシウムは何gか。
2.8g
3.0g
4.0g
4.2g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.2gの銅を十分に加熱したとき、銅に結びつく酸素の質量は何gか。
1.1g
1.3g
0.9g
6.5g
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