WorksheetsElements and Compounds
Total questions: 31
Worksheet time: 17mins
Name
Class
Date
1.
A pure substance made of only ONE type of atom is called
a)
molecule
b)
compound
c)
element
d)
mixture
2.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
3.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
4.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
5.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
6.
a)
1
b)
2
c)
3
d)
4
7.
a)
1
b)
2
c)
3
d)
4
8.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
9.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
10.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
11.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
12.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
13.
What is krypton?
a)
element
b)
compound
c)
mixture
14.
What is gold?
a)
element
b)
compound
c)
mixture
15.
What is sugar?
a)
element
b)
compound
c)
mixture
16.
What is water?
a)
element
b)
compound
c)
mixture
17.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
18.
Contains two or more atoms combined
a)
Elements
b)
Compounds
c)
Mixtures
19.
The air is a _________.
a)
element
b)
mixture
c)
compound
d)
energy
20.
Examples are diamonds (C) and Uranium (U)
a)
elements
b)
mixtures
c)
compounds
21.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
22.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
23.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
24.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
25.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
26.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Compound
c)
Mixture of Compounds
d)
Element
27.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
28.
Classify the picture with the correct label.
a)
Mixture of Compounds
b)
Mixture of Elements
c)
Compound
d)
Mixture of Elements & Compounds
29.
These can only be separated by chemical means.
a)
element
b)
compound
c)
mixture
d)
stuff
30.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
31.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
100 %
