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Counting Atoms In Molecules 2
Test Description: For begnning chemistry students to count the number of atoms and elements in a chemical formula.
Instructions: Answer all questions to get your test result.
1) How many atoms are in this equation: NaCl
A
3
B
1
C
2
D
4
2) How many elements are in this equation: NaCl
A
2
B
3
C
4
D
1
3) How many atoms are in this equation: NaHCO3
A
3
B
4
C
7
D
6
4) How many elements are in this equation: NaHCO3
A
3
B
4
C
6
D
7
5) How many atoms are in this equation: Mg3(PO4)2?
A
2
B
8
C
3
D
13
6) How many elements are in this equation: Mg3(PO4)2?
A
13
B
2
C
8
D
3
7) How many atoms are in this equation: Mg2N3
A
5
B
2
C
6
D
3
8) How many elements are in this equation: Mg2N3
A
3
B
2
C
5
D
6
9) How many atoms are in this equation: Mn(SO4)2
A
8
B
4
C
11
D
2
10) How many elements are in this equation:Mn(SO4)2
A
3
B
11
C
4
D
2
*select an answer for all questions
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