KHTN 8- HK1- ÔN TẬP 2
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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54 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thành phần phân tử của base gồm
một nguyên tử kim loại và một hay nhiều nhóm -OH.
một nguyên tử kim loại và nhiều nhóm -OH.
một hay nhiều nguyên tử kim loại và một hay nhiều nhóm -OH.
một hay nhiều nguyên tử kim loại và nhiều nhóm -OH.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên gọi của NaOH là
Sodium Oxide
Sodium hydroxide
Sodium (II) hydroxide
Sodium hydride
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất nào sau đây là base?
Đồng (II) nitrate
Potassium chloride
Iron (II) sulfate
Calcium hydroxide
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các chất sau: KCl, AgCl, Ca(OH)2, CuSO4, Ba(OH)2, KHCO3. Số chất thuộc hợp chất base là
2.
3.
4.
1.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al2O3 có base tương ứng là
Al(OH)2.
Al2(OH)3.
AlOH.
Al(OH)3.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các chất sau: NaCl, HCl, H2SO4, Ba(OH)2, Ca(OH)2, Mg(OH)2, K2CO3, AlCl3, NaOH. Số các chất có khả năng làm quỳ ẩm chuyển xanh là
2.
3
4
5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình hóa học biểu diễn quá trình CaO → Ca(OH)2 là
2CaO + H2 → 2Ca(OH)2
CaO + H2O → Ca(OH)2
CaO + 2H2O → Ca(OH)2 + H2
2CaO + O2 + 2H2 → 2Ca(OH)2
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