
ÔN TẬP KHTN 7 GIỮA HKI
Quiz
•
Science
•
7th Grade
•
Easy
Cương Duy
Used 2+ times
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80 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nguyên tử trung hòa về điện nên
số p = số e = số n
số n = số e
số p = số e
số p = số n
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Các loại nguyên tử giống nhau là những nguyên tử có cùng loại
số proton
số nơtron
số electron
số proton + số nơtron
3.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Đơn vị khối lượng nguyên tử là .....
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Nguyên tố Kali có ký hiệu hóa học là
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Nguyên tử Sodium có 11 electron. Nguyên tử Sodium có bao nhiêu lớp electron?
4
3
2
1
6.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Nguyên tử X có 7 hạt prton, 7 hạt neutron. Nguyên tử X có tổng bao nhiêu hạt cơ bản trong nguyên tử
7
14
21
28
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Nguyên tử Oxygen có 8 hạt proton. Hỏi Oxygen có điện tích hạt nhân là bao nhiêu?
8
-8
+8
8+
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