Ôn tập giữa kì hoá 7
Quiz
•
Chemistry
•
7th Grade
•
Medium
Nhung Hong
Used 163+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hạt nhân nguyên tử được cấu tạo từ
electron và neutron
electron và proton
neutron và proton
electron, neutron và proton
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hạt nhân của nguyên tử Sodium có 11 proton. Số electron của nguyên tử Sodium là bao nhiêu?
9
10
11
12
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Trong hạt nhân của nguyên tử, hạt nào không mang điện?
proton
neutron
electron
cả 3 loại hạt trên
4.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Kí hiệu hoá học nào bị viết sai?
Na
mg
F
Al
CL
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Biết nguyên tố X có khối lượng bằng 2 lần khối lượng nguyên tử của oxygen. Hỏi X là nguyên tố hoá học nào sau đây? (Cho O = 16, Na = 23, Mg = 24, S = 32, Ca = 40)
Calcium
Sulfur
Sodium
Magnesium
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Trong một nguyên tử
số p = số n
số e = số n
số p = số e
số e = số p + số n
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Cho thành phần các nguyên tử như sau: X(17p, 16n); Y(20p 19n); Z(17p, 15n); T(19p, 20n). Hỏi có bao nhiêu nguyên tố hoá học?
1
2
3
4
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