WorksheetsUnit 3 Elements, Compounds, and Mixtures Review
Total questions: 25
Worksheet time: 15mins
Name
Class
Date
1.
A pure substance that cannot be separated into simpler substances by chemical or physical means.
a)
Element
b)
Compound
c)
Mixture
d)
Chemical
2.
These contain only one kind of atom.
a)
element
b)
compound
c)
mixture
d)
water
3.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
4.
A combination of two or more substances that can be physically separated is called a...
a)
Mixture
b)
Pure substance
c)
Compound
5.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
6.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
7.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
8.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
9.
This diagram represents...
a)
An element
b)
A molecule
c)
A compound
d)
A mixture of elements and compounds
10.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
11.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
chromatography paper
d)
alum
12.
Look at the apparatus setup. It can NOT be used to separate which of the following mixtures?
a)
Marble chips from oil
b)
Alcohol and water
c)
Chalk from sugar solution
d)
Sand and sea water
13.
To separate a mixture of soil and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
14.
Water and alcohol are easily separated by distillation because of their
a)
different melting points
b)
different colours
c)
different densities
d)
different boiling points
15.
The chart below lists some substances and their symbols. How many of these substances are examples of elements?
a)
1
b)
2
c)
3
d)
4
16.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
17.
What is an example of a mixture?
a)
Table salt
b)
Salt water
c)
Oxygen
d)
Air
18.
Which of these substances is an example of a solution?
a)
milk
b)
sweet tea
c)
mercury
d)
concrete
19.
A snow globe would be an example of a __________________.
a)
colloid
b)
solution
c)
suspension
20.
substance that dissolves the solute
a)
solution
b)
solvent
c)
saturation
d)
so
21.
Which of the following appear to be clear (are not cloudy)?
a)
Solution
b)
Suspension
c)
Colloid
22.
Milk is a
a)
solution
b)
suspension
c)
colloid
23.
Which substance is MOST soluble at 0 ºC?
a)
KCI
b)
NaNO3
c)
NaCl
d)
Ce2(SO4)3
24.
Sand floating in water, but most of the sand is settled at the bottom this an example of which type of mixture?
a)
A solution
b)
A colloid
c)
A suspension
d)
A compound
25.
Particles are spread throughout a fluid but are too large to stay mixed w/o being stirred or shaken.
a)
suspension
b)
colloid
c)
solution
100 %
