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Counting Atoms
Test Description: Practice for atoms
Instructions: Answer all questions to get your test result.
1) How many atoms are in this equation: NaCl
A
4
B
2
C
1
D
3
2) How many sodium are in this equation: NaCl
A
3
B
4
C
1
D
2
3) How many TOTAL atoms are in this equation: NaHCO3
A
3
B
4
C
7
D
6
4) How many oxygen atoms are in this equation: 2NaHCO3
A
8
B
4
C
3
D
6
5) How many ELEMENTS are in this equation: Mg2N3
A
1
B
2
C
3
D
4
6) How many magnesium atoms are in this equation: Mg2N3
A
2
B
4
C
3
D
1
7) How many oxygen atoms in 3CO2 ?
A
6
B
2
C
8
D
4
8) How many hydrogen atoms in 2HOH ?
A
2
B
1
C
4
D
6
9) How many sodium atoms in 5NaClS ?
A
3
B
5
C
1
D
15
10) How many TOTAL atoms in 4NaCl ?
A
6
B
8
C
4
D
2
*select an answer for all questions
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