
Câu hỏi về hóa học
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Medium
thức thức
Used 2+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức chung của oxide kim loại thuộc nhóm IA là
R2O3
RO2
R2O
RO
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phòng thí nghiệm, kim loại Na được bảo quản bằng cách ngâm trong chất lỏng nào sau đây?
Nước
Dầu hỏa
Giấm ăn
Cồn
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong hợp chất, các kim loại kiềm có số oxi hóa là
+1
+2
+4
+3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sodium phản ứng với chlorine sinh ra sản phẩm nào sau đây?
KCl
NaCl
NaClO
NaOH
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây tác dụng với dung dịch KHCO3 sinh ra khí CO2?
HCl
KNO3
NaNO3
NaCl
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch Na2CO3 tác dụng được với dung dịch nào sau đây?
Na2SO4
KNO3
KOH
CaCl2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên của Na2CO3 là
sodium carbonate
sodium carbide
sodium carbon
sodium hydrogencarbonate
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