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WorksheetsElements and Compounds
Total questions: 22
Worksheet time: 13mins
Name
Class
Date
1.
Which of the following is a compound?
a)
Co
b)
He
c)
CO
d)
H
2.
Which statement best describes an element?
a)
made from mixture
b)
thousands in the world
c)
pure, made of only one thing
d)
can be separated
3.
Which best describes a compound?
a)
found on the periodic table
b)
made from two or more elements
c)
a pure substance
d)
only 100 in the world
4.
Elements are represented by a...
a)
More than one capital letter
b)
Chemical symbol
c)
Chemical formula
d)
Oxygen
5.
Compounds are represented by a...
a)
Capital Letter
b)
Chemical symbol
c)
Chemical formula
d)
Chlorine
6.
A new compound has been discovered. Here is the chemical formula:
CHOFeNaNPb
How many elements are in this compound?
CHOFeNaNPb
How many elements are in this compound?
a)
5
b)
6
c)
7
d)
10
7.
The chemical symbol O is used for what element?
a)
Cerium
b)
Cobalt
c)
Oxygen
d)
Osmium
8.
The chemical symbol N is used for what element?
a)
Rubidium
b)
Gold
c)
Potassium
d)
Nitrogen
9.
Which one can be found on the periodic table?
a)
Compound
b)
Element
10.
Which one has more than one type of atom in it?
a)
Element
b)
Compound
11.
Is salt NaCl a compound or a element?
a)
Element
b)
Compound
12.
Water is an example of:
a)
Element
b)
Compound
c)
Solution
13.
How many different elements are represented in the compound?
Fe3O4
Fe3O4
a)
2
b)
3
c)
1
d)
4
14.
How many different elements are represented in the compound?
C13H9N
C13H9N
a)
2
b)
3
c)
1
d)
4
15.
How many different elements are represented in the compound?
CH4
CH4
a)
1
b)
2
c)
3
d)
4
16.
Which of the following is the chemical symbol for Hydrogen?
a)
He
b)
H
c)
Hy
d)
Hn
17.
Which of the following is the chemical formula for Sodium?
a)
S
b)
So
c)
NA
d)
Na
18.
Which of the following is the chemical formula for Salt?
a)
Na
b)
Cl
c)
ClNa
d)
NaCl
19.
What is the chemical symbol for the element Silicon
a)
S
b)
Si
c)
si
d)
Sl
20.
What is the chemical symbol for the element Gold
a)
G
b)
go
c)
AU
d)
Au
21.
The smallest part of an element is
a)
proton
b)
atom
c)
compound
d)
mixture
22.
The two most common elements found in the oceans are. Remember oceans are made up of water.
a)
Sodium and Nitrogen
b)
Oxygen and Aluminum
c)
Iron and Carbon
d)
Oxygen and Hydrogen
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