Hóa 8 - Bài Luyện tập 2
8th Grade
•10 Qs
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Hóa 8 - Bài Luyện tập 2
Quiz
•
Chemistry
•
8th Grade
•
Hard
Luna Jan
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của K là
I
II
III
I và II
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của Zn là:
I
II
III
I và II
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của nhóm SO4 là:
I
II
III
IV
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của nhóm OH là:
I
II
III
IV
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Trong hợp chất SO2, S mang hóa trị:
II
IV
VI
III
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hãy chọn CTHH phù hợp với hóa trị II của Fe
Fe2O3
FeO
FeCl3
Fe(OH)3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Công thức hóa học tạo bởi Na và CO3 là:
NaCO3
Na2CO3
Na2(CO3)2
Na3CO3
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