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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
2
B
1
C
3
D
4
2) How many sodium are in this equation: NaCl
A
2
B
3
C
1
D
4
3) How many TOTAL atoms are in this equation: NaHCO3
A
3
B
4
C
6
D
7
4) How many oxygen atoms are in this equation: 2NaHCO3
A
6
B
8
C
4
D
3
5) How many ELEMENTS are in this equation: Mg2N3
A
3
B
4
C
2
D
1
6) How many magnesium atoms are in this equation: Mg2N3
A
1
B
2
C
3
D
4
7) How many oxygen atoms in 3CO2 ?
A
4
B
2
C
6
D
8
8) How many hydrogen atoms in 2HOH ?
A
2
B
1
C
4
D
6
9) How many sodium atoms in 5NaClS ?
A
15
B
3
C
1
D
5
10) How many TOTAL atoms in 4NaCl ?
A
6
B
8
C
2
D
4
*select an answer for all questions
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