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WorksheetsMixtures Pre-Test
Total questions: 34
Worksheet time: 18mins
Name
Class
Date
1.
Can a mixture be separated?
a)
No
b)
Yes
c)
Only sometimes
2.
A change that occurs without changing the chemical makeup is a
a)
Chemical Change
b)
Color change
c)
Physical Change
d)
Substance Change
3.
A solution that contains a large amount of solute is best described as
a)
unsaturated
b)
concentrated
c)
dilute
d)
weak
4.
Which of these mixture types would have visible particles that could settle to the bottom of the mixture?
a)
suspension
b)
solution
c)
colloid
d)
sassafrass
5.
An element can be broken down into simpler substances by...
a)
physical means
b)
chemical means
c)
Both chemical and physical means
d)
elements can't be broken down
6.
Which of these is NOT a pure substance?
a)
elements
b)
compounds
c)
mixtures
d)
they are all pure substances
7.
A homogeneous mixture has the same composition of particles throughout.
a)
True
b)
False
8.
An example of a homogeneous mixture would be:
a)
salad
b)
perfume
c)
pizza
d)
chex mix
9.
Air is a mixture of
a)
liquids
b)
gas
c)
solids
d)
liquids and gases
10.
Which one of the following is NOT an example of a separation technique?
a)
boiling an egg
b)
fishing net
c)
surgical mask
d)
tea strainer
11.
Which technique is shown the diagram below
a)
seiving
b)
filtration
c)
decanting
d)
crystallization
12.
Which one of the following solids is immiscible in water?
a)
salt
b)
sugar
c)
sand
d)
copper sulfate
13.
Sand and gravel may be separated from each other through using
a)
a filter funnel
b)
leibig condenser
c)
an evaporating basin
d)
sieve
14.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
distillation apparatus
d)
chromatography paper
15.
Dyes in water soluble markers may be separated by means of
a)
Distillation
b)
Liquid-Liquid Extraction
c)
Chromatography
d)
Centrifuge
16.
Which one of the following methods would NOT be used to separate an insoluble solid and a liquid?
a)
evaporation
b)
decanting
c)
distillation
d)
chromatography
17.
The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as
a)
evaporation
b)
crystallization
c)
centrifuge
d)
chromatography
18.
In the process of evaporation, which one of the following pieces of laboratory apparatus would NOT be used?
a)
evaporating basin
b)
filter funnel
c)
bunsen burner
d)
Wire gauze
19.
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
a)
A = distillate, B = filtrate
b)
A = filtrate, B = residue
c)
A = residue, B = filtrate
d)
A = residue, B = distillate
20.
Water and alcohol are easily separated by distillation because of their
a)
different densities
b)
different boiling points
c)
different colours
d)
different melting points
21.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
seiving
c)
evaporation
d)
decanting
22.
Which one of the following techniques would best be used to separate soil and water?
a)
distillation
b)
decanting
c)
filtration
d)
evaporation
23.
Name the separation technique shown in the diagram
a)
evaporation
b)
crystallization
c)
distillati
d)
seiving
24.
Oil and water may be separated by using
a)
leibig condenser
b)
separating funnel
c)
centrifuge
d)
distillation
25.
What equipment is shown the picture given which is also commonly used in separating techniques!
a)
basin
b)
pestle
c)
mortar
d)
evaporating basin
26.
Which of the following is a pure substance and not a mixture?
a)
Common salt
b)
Milk
c)
Petrol
d)
Soap
27.
What is a compound?
a)
the simplest form of a substance
b)
a combination only of 3 elements
c)
a combination of 2 or more elements
d)
a place where people are held
28.
What is a mixture?
a)
a combination of elements to make a new substance
b)
a chemically combined substance
c)
a combination of substances where new substances are formed through a reaction
d)
a combination of substances in which the atoms of the substance do not chemically combine
29.
What is the simplest form that cannot be broken down to anything simpler?
a)
element
b)
solution
c)
compound
30.
How are solutions and mixtures alike?
a)
They are a combination of substances
b)
They are both chemically combined
c)
they can be separated immediately
d)
they have no similarities
31.
Which of these is a mixture?
a)
Uncooked chocolate chips and cookie dough blended together with a spoon.
b)
Distilled water
c)
A nugget of gold
d)
A molecule of Oxygen
32.
The smallest unit of an element that still has the properties of that element is?
a)
a substance
b)
a mixture
c)
a compound
d)
an atom
33.
The basic unit of matter is
a)
a mixture
b)
a substance
c)
an atom
d)
a compound
34.
Carbon and oxygen atoms can combine to form the gas called carbon dioxide.
a)
is a molecule, so it no longer has atoms
b)
is a molecule made of atoms
c)
has atoms, so it is not a molecule
d)
is a new kind of atom
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