ôn luyện hóa 8 giữa kỳ I
Quiz
•
Chemistry
•
8th - 9th Grade
•
Practice Problem
•
Hard
Cúc Kim
Used 61+ times
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19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất có 1 nguyên tử X và 1 nguyên tử oxi, Trong đó X chiếm 80% về khối lượng, X là:
Fe
Cu
Al
S
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất có 1 nguyên tử X, 1 nguyên tử C và 3 nguyên tử O có phân tử khối nặng gấp 2,5 lần Ca, X là
Cu
Ca
Zn
Fe
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho hợp chất XH4 ; Na2Y CTHH của hợp chất tạo bởi X và Y
X2Y3
XY3
XY2
X2Y
X
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
K có hóa trị (I) S hóa trị (II) CTHH của hợp chất là
KS2
KS
K3S
K2S
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fe (III) O (II) CTHH của hợp chất là
Fe2O3
Fe3O2
FeO3
FeO
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fe thể hiện hóa trị II Trong CTHH:
Fe2O3
FeO
FeCl3
Fe3O4
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Trong CTHH H3PO4 hóa trị của PO4 là:
I
II
III
IV
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