Kiểm tra Hóa trị lớp 7
Quiz
•
Chemistry
•
7th Grade
•
Medium
HOÀNG THỊ HẢI HẠNH
Used 7+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của nguyên tố oxygen là gì?
-2
+2
+1
0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho biết hóa trị của nguyên tố sodium (natri)
3
1.5
2
1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của nguyên tố calcium trong hợp chất là bao nhiêu?
1
3
4
2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính hóa trị của nguyên tố lưu huỳnh trong H2S.
-2
+4
+2
0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất NaCl có hóa trị của các nguyên tố là gì?
Na: +1, Cl: +1
Na: +1, Cl: -1
Na: +2, Cl: -1
Na: 0, Cl: -1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bảng hóa trị của nguyên tố nhôm là bao nhiêu?
4
2
3
1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính toán hóa trị của nguyên tố Iron (sắt) trong Fe2O3.
+3
+4
+1
+2
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