
hoa li
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
Lam Chu
Used 1+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điền vào chỗ trống: "Oxide là hợp chất hai nguyên tố, trong đó có một nguyên tố là"
carbon.
oxygen.
nitrogen.
hydrogen.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi đun nước, hiện tượng nào xảy ra đầu tiên?
Nước nóng lên từ trên mặt nồi.
Nước nóng lên đồng thời từ mọi nơi.
Nước nóng lên từ dưới đáy nồi.
Nước nóng lên từ thành nồi.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydrochloric acid có công thức hóa học là
H2SO4.
HClO
HCl
HNO3.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điền vào chỗ trống: "Acid là những ... trong phân tử có nguyên tử ... liên kết với gốc acid. Khi tan trong nước, acid tạo ra ion ..."
Đơn chất, hydrogen, OH−
Hợp chất, hydrogen, H+
Đơn chất, hydroxide, OH−
Hợp chất, hydroxide, H+
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các chất sau: NaOH, Cu(OH)2 , Al(OH)3, Mg(OH)2 chất nào là Base kiềm ?
Mg(OH)2
Al(OH)3
NaOH
Cu(OH)2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đơn vị cường độ dòng điện là:
ampe
kg
Vôn (V);
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Muối nào sau đây là muối tan?
CaCO3
NaCl
AgCl
BaSO4
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