
bài 16: Iron và sulfur
Interactive Video
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Chemistry
•
9th Grade
•
Easy
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3 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1.
Khi nung hỗn hợp bột Iron (Fe) và sulfur (S), hiện tượng nào sau đây xảy ra?
A. Hỗn hợp tan dần vào nhau, không có hiện tượng gì đặc biệt.
B. Hỗn hợp phát sáng, chuyển sang màu đen, có chất mới tạo thành.
C. Hỗn hợp bay hơi, xuất hiện khí mùi hắc.
D. Bột Iron nóng chảy, còn sulfur không thay đổi.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2.
Chất rắn màu đen tạo thành sau phản ứng giữa sắt và lưu huỳnh là
A. Iron(III) sulfide (Fe₂S₃)
B. Iron(II) oxide (FeO)
C. Iron(II) sulfide (FeS)
D. Sulfur dioxide (SO₂)
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Trong phản ứng trên, nguyên tử Fe trong hợp chất sản phẩm có hóa trị .....
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