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WorksheetsElements Compounds Materials
Total questions: 27
Worksheet time: 12mins
Name
Class
Date
1.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
2.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
3.
Which of the following is a pure substance?
a)
CO
b)
C02
c)
Co
d)
H2O
4.
Which of the following is a pure substance?
a)
O2
b)
Al2CO5
c)
C6H12O6
d)
SiO2
5.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
6.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
7.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
8.
What is sugar?
a)
element
b)
compound
c)
mixture
9.
What is gold?
a)
element
b)
compound
c)
mixture
10.
What is water?
a)
element
b)
compound
c)
mixture
11.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
12.
What is the most abundant element found in the earth's atmosphere?
a)
Oxygen
b)
Sulfur
c)
Nitrogen
d)
Argon
13.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
14.
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
15.
Which of the following is a compound?
a)
Co
b)
He
c)
CO
d)
H
16.
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
17.
Elements are represented by a...
a)
More than one capital letter
b)
Chemical symbol
c)
Chemical formula
d)
Oxygen
18.
Compounds are represented by a...
a)
Capital Letter
b)
Chemical symbol
c)
Chemical formula
d)
Chlorine
19.
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
20.
The chemical symbol N is used for what element?
a)
Rubidium
b)
Gold
c)
Potassium
d)
Nitrogen
21.
How many different elements are represented in the compound?
Fe3O4
Fe3O4
a)
2
b)
3
c)
1
d)
4
22.
Which item is not made of matter?
a)
air
b)
water
c)
a pencil
d)
a shadow
23.
Provided is a list of five different substances. How many of these substances are elements?
a)
2
b)
3
c)
4
d)
5
24.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup
d)
plastic bottle
25.
The combination of sand and salt in a bowl is an example of a
a)
mixture.
b)
compound.
c)
formula.
d)
chemical property.
26.
One thing that the periodic table does NOT tell you is
a)
atomic mass.
b)
atomic number.
c)
chemical symbol.
d)
element shape.
27.
One result of a chemical change is
a)
a substance is shaped differently.
b)
one or more new substances.
c)
a substance that is reduced in size.
d)
a substance that can be changed back to the original form.
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