
ÔN TẬP HÓA LỚP 8-9
Authored by ha phan
Chemistry
1st - 10th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
kí hiệu của nguyên tố canxi là
Fe
Mg
Ca
C
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để làm sạch nước bể bơi có thể dùng hóa chất nào sau đây
xà phòng
nước clo
kem đánh răng
bột giặt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cháy rừng là do các lá cây thân gỗ tác dụng với
O2
O3
N2
NO
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mg + O2 Sản phẩm thu được là
Mg
O2
Mg2O3
MgO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
NGUYÊN TỬ KHỐI CỦA OXI LÀ
12
16
14
31
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
QUẢ CHANH CÓ VỊ CHƯA LÀ DO CHANH CÓ TÍNH
Bazơ
Kiềm
Axit
trung tính
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
phản ứng của Fe + HCl --> FeCl2 + H2. Thuộc loại phản ứng
phản ứng trao đổi
phản ứng phân hủy
phản ứng thế
phản ứng oxi hóa khử
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