WorksheetsChemical Formulas Flash Cards
Total questions: 48
Worksheet time: 24mins
Name
Class
Date
1.
How many hydrogen atoms?
CH2O
CH2O
a)
1
b)
2
c)
3
d)
4
2.
How many total atoms?
NH3
NH3
a)
1
b)
2
c)
3
d)
4
3.
How many nitrogen atoms?
NH3
NH3
a)
1
b)
2
c)
3
d)
4
4.
How many carbon atoms?
C3H9P
C3H9P
a)
9
b)
1
c)
3
d)
13
5.
How many total atoms?
C3H9P
C3H9P
a)
9
b)
1
c)
3
d)
13
6.
How many total atoms?
C3H7NO2
C3H7NO2
a)
3
b)
7
c)
12
d)
13
7.
How many nitrogen atoms?
C3H7NO2
C3H7NO2
a)
3
b)
7
c)
2
d)
1
8.
How many hydrogen atoms?
C2H7PO
C2H7PO
a)
3
b)
7
c)
2
d)
1
9.
How many total atoms?
C2H7PO
C2H7PO
a)
9
b)
7
c)
2
d)
11
10.
How many sodium atoms?
Na2SeO4
Na2SeO4
a)
2
b)
1
c)
4
d)
6
11.
How many total atoms?
Na2SeO4
Na2SeO4
a)
2
b)
7
c)
4
d)
6
12.
How many total atoms?
C3H8O
C3H8O
a)
3
b)
8
c)
11
d)
12
13.
How many oxygen atoms?
C3H8O
C3H8O
a)
3
b)
8
c)
1
d)
2
14.
How many chlorine atoms?
C2H3Cl
C2H3Cl
a)
3
b)
2
c)
1
d)
4
15.
How many total atoms?
C2H3Cl
C2H3Cl
a)
5
b)
2
c)
3
d)
6
16.
How many total atoms?
H2SO4
H2SO4
a)
2
b)
4
c)
6
d)
7
17.
How many sulfur atoms?
H2SO4
H2SO4
a)
2
b)
1
c)
3
d)
4
18.
How many carbon atoms?
HCN
HCN
a)
2
b)
1
c)
3
d)
4
19.
How many total atoms?
HCN
HCN
a)
2
b)
1
c)
3
d)
4
20.
How many total atoms?
C2N2Se
C2N2Se
a)
2
b)
5
c)
3
d)
4
21.
How many nitrogen atoms?
C2N2Se
C2N2Se
a)
2
b)
1
c)
3
d)
4
22.
How many sulfur atoms?
H2S2O7
H2S2O7
a)
2
b)
1
c)
3
d)
4
23.
How many total atoms?
H2S2O7
H2S2O7
a)
2
b)
7
c)
11
d)
9
24.
How many total atoms?
C6H12O6
C6H12O6
a)
6
b)
12
c)
18
d)
24
25.
How many oxygen atoms?
C6H12O6
C6H12O6
a)
6
b)
12
c)
18
d)
24
26.
How many silicon atoms?
CH3Si
CH3Si
a)
1
b)
2
c)
3
d)
4
27.
How many total atoms?
CH3Si
CH3Si
a)
5
b)
2
c)
3
d)
4
28.
How many total atoms?
C2H6O
C2H6O
a)
6
b)
2
c)
8
d)
9
29.
How many carbon atoms?
C2H6O
C2H6O
a)
6
b)
2
c)
8
d)
1
30.
How many oxygen atoms?
CH4O
CH4O
a)
4
b)
2
c)
6
d)
1
31.
How many total atoms?
CH4O
CH4O
a)
4
b)
2
c)
6
d)
1
32.
How many total atoms?
C3H8O3
C3H8O3
a)
3
b)
8
c)
11
d)
14
33.
How many hydrogen atoms?
C3H8O3
C3H8O3
a)
3
b)
8
c)
11
d)
14
34.
How many carbon atoms?
COS
COS
a)
3
b)
0
c)
1
d)
4
35.
How many total atoms?
COS
COS
a)
3
b)
0
c)
1
d)
4
36.
How many total atoms?
CH5N
CH5N
a)
3
b)
5
c)
6
d)
7
37.
How many nitrogen atoms?
CH5N
CH5N
a)
3
b)
5
c)
1
d)
2
38.
How many hydrogen atoms?
CH3I
CH3I
a)
3
b)
5
c)
1
d)
2
39.
How many total atoms?
CH3I
CH3I
a)
3
b)
5
c)
1
d)
2
40.
How many total atoms?
AlBr3
AlBr3
a)
3
b)
4
c)
1
d)
2
41.
How many aluminum atoms?
AlBr3
AlBr3
a)
3
b)
4
c)
1
d)
2
42.
How many nitrogen atoms?
C4H3FN3O
C4H3FN3O
a)
3
b)
4
c)
1
d)
2
43.
How many total atoms?
C4H3FN3O
C4H3FN3O
a)
10
b)
7
c)
11
d)
12
44.
How many total atoms?
C6H13NO
C6H13NO
a)
19
b)
13
c)
20
d)
21
45.
How many hydrogen atoms?
C6H13NO
C6H13NO
a)
6
b)
13
c)
1
d)
3
46.
How many chlorine atoms?
SeOCl2
SeOCl2
a)
2
b)
1
c)
4
d)
3
47.
How many total atoms?
SeOCl2
SeOCl2
a)
2
b)
1
c)
4
d)
3
48.
How many total atoms?
CH2O
CH2O
a)
1
b)
2
c)
3
d)
4
100 %
