WorksheetsUnit 2A - Pure Substances
Total questions: 45
Worksheet time: 10hrs 4mins
Name
Class
Date
1.
C
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
2.
H
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
3.
Br
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
4.
O
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
5.
N
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
6.
Mn
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
7.
Uuo
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
8.
Au
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
9.
Na
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
10.
Fe
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
11.
Co
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
12.
Rg
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
13.
S
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
14.
Ar
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
15.
Rn
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
16.
Fr
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
17.
H2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
18.
Br2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
19.
O2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
20.
N2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
21.
O3
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
22.
H3
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
23.
S3
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
24.
H2O
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
25.
C12H22O11
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
26.
HCN
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
27.
CO2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
28.
CO
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
29.
H2S
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
30.
CCl4 (that is a lowercase L before the 4)
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
31.
SO3
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
32.
NO2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
33.
C7F5NS
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
34.
MgO
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
35.
MgF2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
36.
CuBr4
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
37.
NaCl (that is a lowercase L after the C)
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
38.
Cu3P
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
39.
SrI2 (that is an uppercase "eye" before the 2)
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
40.
MnO2
a)
atom
b)
element
c)
molecule
d)
compound
e)
formula unit
41.
NaCl and H2O
a)
mixture
b)
atom
c)
element
d)
compound
e)
not a pure substance
42.
C12H22O11 and H2O
a)
mixture
b)
molecule
c)
not a pure substance
d)
compound
e)
atom
43.
Fe and C
a)
mixture
b)
molecule
c)
not a pure substance
d)
compound
e)
atom
44.
sand and salt
a)
mixture
b)
molecule
c)
not a pure substance
d)
compound
e)
atom
45.
salt and water
a)
mixture
b)
molecule
c)
not a pure substance
d)
compound
e)
atom
100 %
