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Mixtures: An Introduction

Total questions: 12

Worksheet time: 7mins

Name
Class
Date
1.
A substance that contains only one type of atom is a(n)
a)

element

b)

compound

c)
heterogeneous mixture
d)
homogeneous mixture
2.
Which of these is a pure substance?
a)

whole milk

b)
table salt
c)

air

d)
sea water
3.
Two classifications of a pure substance are
a)
homogeneous and heterogeneous
b)
atoms and elements
c)
elements and compounds
d)
solutions and colloids
4.

Which is an example of a solution?

a)

sorrel frutee

b)

ketchup

c)

vanilla milk

d)

salt and sugar

5.

Which of the following mixtures will behave like this on standing?

i. sand and water

ii. chalk and water

iii. milk

iv. sugar water

a)

i only

b)

i, ii and iii only

c)

i and ii only

d)

i, ii, iii and iv

6.

Identify the mixtures.

a)

A only

b)

C and D only

c)

A and B only

d)

A, C and D only

7.

Diagram "a" is an example of

a)

an element

b)

a compound

c)

a mixture of elements

d)

a mixture of compounds

8.

What does this illustrate?

a)

Elements

b)

Compunds

c)

Mixture of an Element and a Compund

d)

Mixture of Compounds

9.

Identify the pure substances.

a)

X and Y only

b)

X only

c)

Y only

d)

X, Y and Z

10.

Which of the mixtures have particles that cannot pass through visking tubing?

i. copper sulphate solution

ii. sugar water

iii. baby powder and water

a)

i and ii only

b)

i, ii and iii

c)

i and iii only

d)

iii only

11.

Identify the mixture.

a)

Substance H boils at 125 oC

b)

Substance J has a density of 3.5 g/cm3

c)

Substance L boils between 100 and 105 oC

d)

Substance N cannot be separated by physical means.

12.

Which of the following can be separated by filtration?

a)

calcium carbonate and water

b)

An alloy

c)

milk

d)

soda water