
Test1
Interactive Video
•
Chemistry
•
9th Grade
•
Hard
Vượng Nông
Used 2+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quan sát thí nghiệm, em hãy cho biết hiện tượng xảy ra khi Natri (Na) tiếp xúc với nước?
A. Na chìm xuống nước và tan từ từ.
B. Na nổi trên mặt nước, chuyển động và bốc cháy.
C. Na tan chậm và không có hiện tượng gì.
D. Na lắng xuống đáy và phát sáng.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi Natri tác dụng với nước, khí nào được giải phóng?
A. Oxi (O₂)
B. Hiđro (H₂)
C. Cacbonic (CO₂)
D. Clo (Cl₂)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch sau phản ứng có tính axit ?
Đúng
Sai
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Công thức hóa học của kiềm tạo thành sau phản ứng là: __________
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