WorksheetsElements Compounds and Mixtures
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
2.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
3.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
4.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
5.
What is H2SO4
made up of?
made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
6.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
7.
Carbon is a(n) ______
a)
compound
b)
element
c)
mixture
8.
Carbon Dioxide is a ______
a)
compound
b)
element
c)
mixtures
d)
Battle of Bunker Hill
9.
GOLD
a)
Al
b)
Ag
c)
Ar
d)
Au
10.
CHLORINE
a)
C
b)
Ca
c)
Cl
d)
Cu
11.
CALCIUM
a)
C
b)
Ca
c)
Cu
d)
Cl
12.
CARBON
a)
C
b)
Ca
c)
Cl
d)
Cu
13.
COPPER
a)
C
b)
Ca
c)
Cu
d)
Cl
14.
SULFUR
a)
Su
b)
S
c)
Sf
d)
Si
15.
SILVER
a)
Au
b)
Ag
c)
Al
d)
Ar
16.
SILICON
a)
S
b)
Si
c)
Su
d)
Sc
17.
SODIUM
a)
S
b)
So
c)
N
d)
Na
18.
POTASSIUM
a)
P
b)
Ka
c)
K
d)
Pt
19.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
20.
What is krypton?
a)
element
b)
compound
c)
mixture
100 %
