
TN ôn tập thi học kì 1 KHTN 8
Quiz
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Science
•
8th Grade
•
Practice Problem
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Medium
Wayne Vader
Used 21+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Để xác định được mức độ phản ứng nhanh hay chậm người ta sử dụng khái niệm nào sau đây?
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tốc độ phản ứng không phụ thuộc yếu tố nào sau đây.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Khi “bảo quản thực phẩm trong tủ lạnh để giữ thực phẩm tươi lâu hơn” là đã tác động vào yếu tố gì để làm chậm tốc độ phản ứng?
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Trong số những chất có công thức hoá học dưới đây, chất nào có khả năng làm cho quì tím chuyển sang màu đỏ?
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Acid có trong dạ dày của người và động vật giúp tiêu hóa thức ăn là
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Cho các chất sau: HCl, NaCl, CuSO4, H2SO4,NaOH, Mg(OH)2. Số chất thuộc loại acid là
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Để an toàn khi pha loãng sulfuric acid (H2SO4) đặc cần thực hiện theo cách:
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