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Pure substances, Mixtures and Separation Techniques

Total questions: 40

Worksheet time: 19mins

Name
Class
Date
1.

True or false: Magnets can be used to separate iron filings from sand

a)

True

b)

False

2.

True or false: Sieving can be used to separate a mixture with two solid components of different sizes

a)

True

b)

False

3.

The air around us is an example of a mixture

a)

True

b)

False

4.

When sugar dissolves in a glass of warm water, the sugar is the_________

a)

Solute

b)

Solvent

5.

What separation technique did you use to separate the iron filings?

a)

Sieving

b)

Filtration

c)

Magnetic separation

6.

Which of the following substances are Insoluble?

a)

Salt

b)

Sugar

c)

Sand

d)

Coffee

7.

The image shows a mixture of concrete nails and saw dusts. What technique is best to use to separate the nails from the saw dusts?

a)

sieving

b)

chromatography

c)

decantation

d)

magnetic separation

8.

How could you seperate salt that has dissolved in water?

a)

FIltration

b)

Evaporation

c)

Sieving

d)

Magnetic separation

9.

When foods are dissolved in our stomach through acids. Are the stomach acids the solvent or solute?

a)

Solvent

b)

Solute

10.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

11.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

12.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

13.

True or False: Elements and compounds are pure substances.

a)

True

b)

False

14.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
15.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

16.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
17.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Heterogeneous mixture

b)

Pure substance

c)

Suspension

d)

Homogeneous mixture

18.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Hydrogen

19.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
20.
Which of the following is a pure substance? 
a)
Water
b)
Sugar
c)

Gold

d)
ALL of them
21.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

22.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
23.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
24.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
25.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

26.

Which method can you use to separate sand and iron filings?

a)

Distillation

b)

Magnetism

c)

Filtration

d)

Evaporation

27.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
28.

A mixture that contains two or more substances uniformly combined

a)

heterogeneous mixture

b)

homogeneous mixture

c)

suspension

d)

colloid

29.

Matter is classified in...

a)

Elements & Compounds

b)

Homogeneous & Heterogeneous

c)

Colloids & Suspensions

d)

Pure substances & Mixtures

30.
a)
heterogeneous mixture
b)
homogeneous mixture
31.
Two substances physically combined and that appears the same throughout is classified as
a)
A homogeneous mixture
b)
A heterogeneous mixture
c)
An element
d)
  A compound
32.

This separation method is called...

a)

Magnetism

b)

Filtration

c)

Distillation

d)

Evaporation

33.

Identify the substance in box B.

a)

element

b)

compund

c)

mixture

34.

Identify the substance in box D.

a)

element

b)

compound

c)

mixture

35.

Identify the substance in box Y.

a)

element

b)

compound

c)

mixture

36.

Identify the substance in box W.

a)

element

b)

compound

c)

mixture

37.

Identify this substance.

a)

element

b)

compound

c)

mixture

38.

Identify this substance.

a)

element

b)

compound

c)

mixture

39.

Identify this substance.

a)

element

b)

compound

c)

mixture

40.

What is the difference between a compound and a mixture?

a)

one is made of only 1 element, the other is made of several elements

b)

a mixture does not have a chemical formula

c)

a compound can be made many different ways

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