ĐỀ ÔN TẬP
Quiz
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Other
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8th Grade
•
Practice Problem
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Hard
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Used 1+ times
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71 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Cho dãy các chất: KCl, Cu(OH)2, BaO, MgCO3, ZnCl2, KOH, CuSO4, NH4NO3. Số lượng muối có trong dãy là
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Cho 2,7 gam Al phản ứng hết với 500 ml dung dịch H2SO4 0,5 M. Thể tích NaOH 1 M cần dùng để trung hoà hết lượng acid dư là:
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Cho 2,7 gam Al phản ứng hết với 500 ml dung dịch H2SO4 0,5 M. Thể tích NaOH 1 M cần dùng để trung hoà hết lượng acid dư là:
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4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Đốt cháy 1,8 g kim loại M, thu được 3,4 g một oxide. Công thức của oxide đó là
5.
OPEN ENDED QUESTION
3 mins • 1 pt
Nội năng là
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Tại sao muôi múc canh thường được làm nhựa hoặc gỗ
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Bát ăn cơm thường được làm từ bát sứ vì
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