
GKII Hoa 10
Authored by Diễm Ngọc
Chemistry
3rd Grade
Used 12+ times

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33 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất oxi hóa là
chất thu proton.
chất nhường proton.
chất thu electron.
chất nhường electron.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Trong phản ứng: Fe + CuCl2 → FeCl2 + Cu. Chất khử là
3.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Phản ứng a Cu + b HNO3(loãng) → c Cu(NO3)2 + d NO + e H2O. Tổng (a + b) là
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng: Cu + 2H2SO4 (đặc, nóng) → CuSO4 + SO2 + 2H2O, H2SO4 đóng vai trò
chất oxi hóa.
chất khử.
vừa là chất khử, vừa là chất oxi hóa.
chất tạo môi trường.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chỉ ra nội dung sai
Clo là chất khí, màu vàng lục.
Halogen thuộc nhóm VIIA.
Các halogen đều rất độc.
Brom là chất khí, màu nâu đỏ.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Số oxi hóa của S trong các hợp chất SO2, H2SO4, H2S lần lượt là:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng oxi hóa – khử, chất khử là
chất không thay đổi số oxi hóa.
chất nhường electron.
chất nhận electron.
chất làm giảm số oxi hóa.
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