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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
2
B
1
C
3
D
4
2) How many atoms are in H2O?
A
2
B
4
C
1
D
3
3) How many atoms of Hydrogen are in C2H4O2?
A
8
B
2
C
4
D
6
4) How many elements are in C2H2O2
A
3
B
2
C
1
D
4
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
O
C
None
D
Ba
7) How many Ca atoms are in Ca3(CO2)3?
A
2
B
3
C
4
D
1
8) How many C atoms are in Ca3(CO2)3?
A
3
B
4
C
2
D
1
9) How many O atoms are in Ca3(CO2)3?
A
2
B
8
C
4
D
6
10) How many Silver Atoms are in 2Ag2Cr2O7
A
4
B
6
C
2
D
8
11) How many Chromium atoms are in Ag2(Cr2O7)4
A
6
B
8
C
2
D
4
12) How many Oxygen atoms are in 2Ag2Cr2O7
A
21
B
10
C
14
D
16
13) How many Silver atoms are in Ag2Cr2O7
A
4
B
2
C
1
D
3
14) How many elements are in AlCl6K3?
A
3
B
2
C
4
D
1
15) How many atoms are in AlCl6K3?
A
10
B
6
C
8
D
12
16) Which element in not in the molecule AlCl6K3?
A
Potassium
B
Iodine
C
Aluminum
D
Chlorine
17) How many Aluminum atoms are in 3AlCl6K3
A
3
B
2
C
1
D
4
18) Which elements have the same number of atoms in AlCl6K3?
A
Aluminum and Chlorine
B
Aluminum and Potassium
C
Chlorine and Potassium
D
None of them
*select an answer for all questions
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