KHTN 8- Bài 9. BASE
8th Grade
•35 Qs
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KHTN 8- Bài 9. BASE
Quiz
•
Social Studies
•
8th Grade
•
Practice Problem
•
Medium
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35 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Base là những chất làm cho quỳ tím chuyển sang màu nào trong số các màu sau đây?
A. Đỏ.
B. Xanh.
C. Tím.
D. Vàng.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Điền vào chỗ trống: "Base là những ... trong phân tử có nguyên tử kim loại liên kết với nhóm ... Khi tan trong nước, base tạo ra ion ..."
A. Đơn chất, hydrogen, OH−.
B. Hợp chất, hydroxide, OH−.
C. Đơn chất, hydroxide, H+.
D. Hợp chất, hydrogen, H+.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Base làm chất nào từ không màu thành màu hồng?
A. Quỳ tím.
B. Phenolphthalein.
C. Tinh bột.
D. Nước.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Base nào là kiềm?
A. Ba(OH)2.
B. Cu(OH)2.
C. Mg(OH)2.
D. Fe(OH)2.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Base tác dụng với dung dịch acid tạo thành:
A. Base mới và acid mới.
B. Muối và nước.
C. Base mới không tan và nước.
D. Acid mới và khí hydrogen.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tìm phát biểu đúng.
A. Base là hợp chất mà phân tử có chứa nguyên tử kim loại.
B. Acid là hợp chất mà phân tử có chứa một hay nhiều nguyên tử H.
C. Base hay còn gọi là kiềm.
D. Chỉ có base tan mới gọi là kiềm.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trong các chất sau: KCl, AgCl, Ca(OH)2, CuSO4, Ba(OH)2, KHCO3. Số chất thuộc hợp chất bazơ là
A. 1.
B. 2.
C. 4.
D. 3.
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