KHTN 8 - BÀI ÔN TẬP CUỐI KỲ II
8th Grade
•40 Qs
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KHTN 8 - BÀI ÔN TẬP CUỐI KỲ II
Passage
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
Vi Le Thi
Used 1+ times
FREE Resource
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40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một chất lỏng không màu có khả năng hóa đỏ một chất chỉ thị quì tím. Nó tác dụng với một số kim loại giải phóng hydrogen và nó giải phóng khí CO2 khi thêm vào muối hydrocarbonate. Kết luận nào dưới đây là phù hợp nhất cho chất lỏng ban đầu?
Kiềm
Base
Acid
Muối
Answer explanation
Acid làm đổi màu quỳ tím thành đỏ.
Tác dụng với kim loại giải phóng khí H2
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Chất nào sau đây là hỗn hợp?
Hydrogen
Nước
Acid
Base
Oxygen
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Dung dịch nào sau đây làm quỳ tím chuyển sang màu đỏ?
HCl
H2SO4
NaCl
HNO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hình nào sau đây là phân bón hỗn hợp NPK?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quan sát hình và cho biết ứng dụng của chất trên?
Khử trùng nước sinh hoạt
Làm đẹp
Trang sức
Khử độc
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Acid là những chất khi tan trong nước phân li ra ________.
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Hợp chất .............. được tạo thành từ oxygen và một nguyên tố khác?
Answer explanation
Oxide
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