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Counting Atoms
Test Description: Use your knowledge of the elements and counting atoms
Instructions: Answer all questions to get your test result.
1) How many elements are in the molecule H2O?
A
4
B
2
C
3
D
1
2) How many atoms are in H2O?
A
4
B
3
C
1
D
2
3) How many atoms of Hydrogen are in C2H4O2?
A
8
B
6
C
4
D
2
4) How many elements are in C2H2O2
A
3
B
4
C
2
D
1
5) How many Lithium atoms are in Li2O4?
A
4
B
2
C
6
D
8
6) Which element has 4 atoms in BaO4H2?
A
H
B
None
C
Ba
D
O
7) How many Ca atoms are in Ca3(CO2)3?
A
3
B
4
C
2
D
1
8) How many C atoms are in Ca3(CO2)3?
A
4
B
3
C
2
D
1
9) How many O atoms are in Ca3(CO2)3?
A
6
B
4
C
2
D
8
10) How many Silver Atoms are in 2Ag2Cr2O7
A
2
B
6
C
8
D
4
11) How many Chromium atoms are in Ag2(Cr2O7)4
A
4
B
2
C
6
D
8
12) How many Oxygen atoms are in 2Ag2Cr2O7
A
21
B
16
C
10
D
14
13) How many Silver atoms are in Ag2Cr2O7
A
2
B
3
C
4
D
1
14) How many elements are in AlCl6K3?
A
2
B
3
C
1
D
4
15) How many atoms are in AlCl6K3?
A
8
B
6
C
12
D
10
16) Which element in not in the molecule AlCl6K3?
A
Chlorine
B
Iodine
C
Aluminum
D
Potassium
17) How many Aluminum atoms are in 3AlCl6K3
A
4
B
2
C
3
D
1
18) Which elements have the same number of atoms in AlCl6K3?
A
Aluminum and Potassium
B
None of them
C
Chlorine and Potassium
D
Aluminum and Chlorine
*select an answer for all questions
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