CUỘC ĐUA KÌ THÚ (HÓA HỌC KHTN 8)
Quiz
•
Chemistry
•
8th Grade
•
Hard
Tài liệu số
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxide là hợp chất tạo nên từ mấy nguyên tố?
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxide nào dưới đây góp nhiều phần nhất vào sự hình thành mưa axit?
CO2
CO
SO2
SnO2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hóa học của oxide tạo bởi C và oxi, trong đó C có hóa trị IV là
CO
C2O
CO3
CO2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxide bắt buộc phải có nguyên tố
Oxgen
Halogen
Hidro
Lưu huỳnh
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đáp án nào dưới đây có tên gọi đúng với công thức của oxit?
CO: cacbon(II) oxide
CuO: đồng(II) oxide
FeO: sắt(III) oxide
CaO: canxi trioxide
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CaO là oxide:
Oxide acid
Oxit base
Oxit trung tính
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để nhận biết 2 lọ mất nhãn đựng CaO và MgO ta dùng:
HCl
NaOH
HNO3
Quỳ tím ẩm
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