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Solutions

In this worksheet, students will learn about what solutions are and their different components.

'Solutions' worksheet

Key stage:  KS 3

Curriculum topic:   Chemistry: Pure and Impure Substances

Curriculum subtopic:   Mixtures, including Dissolving

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

A solution is a transparent (see-through) liquid. Solutions can never be cloudy or opaque. For example, the liquid below is orange but it is clear, so it is a solution.

Solution in flask

 

On the contrary, this liquid is not a solution:

Bottle of milk

In a solution, a solid dissolves in a liquid.

 

The solid particles are held tightly together in a fixed arrangement, but that arrangement is broken up by the liquid particles.

 

The solid substances that dissolve are called solutes and the liquids they are dissolved in are called solvents. A solute dissolved in a liquid makes a solution.

 

Substances that dissolve are said to be soluble, whereas those that do not dissolve are said to be insoluble.

Is this statement true or false?

All opaque liquids are solutions.

true

false

Is the liquid in the picture a solution?

 

Liquid being stirred

yes

no

What happens to the solid particles when a solid substance dissolves in a liquid?

They are held tightly in a fixed arrangement.

They are separated when the liquid is added, as they mix with the liquid particles.

They form crystals.

Complete this sentence.

 

A solid dissolves in a liquid. They form a ___________ .

Complete this sentence.

 

Sugar dissolves in water. The solute is __________ .

Complete this sentence.

 

Nail varnish dissolves in propanone. The solvent is _____________ .

Complete this sentence.

 

Nail varnish does not dissolve in water. We say, nail varnish is _____________ in water.

Complete this sentence.

 

Seawater contains salt. Salt is __________________ in water.

The beaker contains oil, water and sand. Choose two correct statements about the contents of this beaker.

 

Beaker of different substances

Oil and water do not mix; they are insoluble in each other.

Sand is soluble in water.

Sand is soluble in oil.

Sand does not dissolve in water.

Is this statement true or false?

Milk is a solution.

true

false

  • Question 1

Is this statement true or false?

All opaque liquids are solutions.

CORRECT ANSWER
false
EDDIE SAYS
The statement is false. Opaque liquids are not solutions; solutions can only be transparent.
  • Question 2

Is the liquid in the picture a solution?

 

Liquid being stirred

CORRECT ANSWER
no
EDDIE SAYS
The liquid in the picture is cloudy, therefore it is not a solution.
  • Question 3

What happens to the solid particles when a solid substance dissolves in a liquid?

CORRECT ANSWER
They are separated when the liquid is added, as they mix with the liquid particles.
EDDIE SAYS
Solid particles are separated when the liquid is added, as they mix with the liquid particles.
  • Question 4

Complete this sentence.

 

A solid dissolves in a liquid. They form a ___________ .

CORRECT ANSWER
solution
EDDIE SAYS
When a solid dissolves in a liquid, they form a solution.
  • Question 5

Complete this sentence.

 

Sugar dissolves in water. The solute is __________ .

CORRECT ANSWER
sugar
EDDIE SAYS
The solute is the solid that dissolves, in this case, sugar.
  • Question 6

Complete this sentence.

 

Nail varnish dissolves in propanone. The solvent is _____________ .

CORRECT ANSWER
propanone
EDDIE SAYS
Propanone is the solvent for nail varnish, as the latter dissolves in it. Propanone is used in nail polish removers.
  • Question 7

Complete this sentence.

 

Nail varnish does not dissolve in water. We say, nail varnish is _____________ in water.

CORRECT ANSWER
insoluble
EDDIE SAYS
Nail varnish is insoluble in water, as it cannot dissolve in it.
  • Question 8

Complete this sentence.

 

Seawater contains salt. Salt is __________________ in water.

CORRECT ANSWER
soluble
EDDIE SAYS
Salt is soluble in water; that's why it is possible to have salty seawater.
  • Question 9

The beaker contains oil, water and sand. Choose two correct statements about the contents of this beaker.

 

Beaker of different substances

CORRECT ANSWER
Oil and water do not mix; they are insoluble in each other.
Sand does not dissolve in water.
EDDIE SAYS
Two correct facts about the contents of this beaker are:
• Oil and water do not mix; they are insoluble in each other.
• Sand does not dissolve in water. The latter is correct for this specific mix; in reality a tiny bit amount of sand can dissolve in water, but it is so small that we think of sand as practically insoluble in water.
  • Question 10

Is this statement true or false?

Milk is a solution.

CORRECT ANSWER
false
EDDIE SAYS
Milk is opaque; therefore it is not a solution.
---- OR ----

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