
Ôn tập Hóa 8 số 5
Authored by Nguyễn Long
Chemistry
8th Grade
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nguyên tố nào là nguyên tố kim loại trong các nguyên tố sau đây?
O
Na
P
S
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cacbon đioxit có công thức hóa học là
CaCO3
CO
CO2
CS2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
N2O5 có tên là
đinitơ pentaoxit
nitơ (V) oxit
nitơ oxit
đinitơ trioxit
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khí oxi tác dụng với khí hiđro sinh ra sản phẩm là
P2O5
SO3
SO2
H2O
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy nào sau đây gồm các nguyên tố đều có hóa trị II?
Ag, O, K, P
Ca, H, Al, Cu
K, Na, Fe, S
Mg, O, Ba, Zn
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hóa học nào sau đây viết đúng?
Al3O2
CuSO4
NaCO3
AgPO4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hóa học nào sau đây viết sai?
Ba3(PO4)2
FeCO3
MgSO4
Na2NO3
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