Kim loại kiềm thổ và hợp chất
Quiz
•
Chemistry
•
12th Grade
•
Medium
Diem Ngoc
Used 45+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại kiềm thổ gồm những nguyên tố nào ?
Na, Mg, Ba
Be, K, Mg
Ca, Li, Ba
Mg, Ba, Be
2.
FILL IN THE BLANK QUESTION
10 sec • 1 pt
Số electron lớp ngoài cùng của Kim loại kiềm thổ là
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại không phản ứng với nước ở nhiệt độ thường là
Na
Ba
K
Be
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi cho dung dịch Ca(OH)2 vào dung dịch Ca(HCO3)2 thấy có ...
bọt khí và kết tủa trắng
bọt khí bay ra
kết tủa trắng xuất hiện
kết tủa trắng sau đó kết tủa tan dần
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng giải thích sự hình thành thạch nhũ trong hang động là
CaCO3 + 2HCl → CaCl2+H2O+CO2
CaCO3 → CaO + CO2
Ca(HCO3)2 →t0 CaCO3 + H2O + CO2
CaCO3 + H2O + CO2 → Ca(HCO3)2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất CaSO4 được gọi là:
Thạch cao nung nhỏ lửa
Nước cứng vĩnh cữu
Thạch cao khan
Thạch cao sống
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Nước cứng là nước có chứa nhiều các ion:
Cu2+, Fe3+
Al3+, Fe3+
Na+, K+
Ca2+, Mg2+
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