# What is a physical change and how can we identify them?

In this lesson, we find out what happens during a physical change, look at examples of physical changes and complete our own investigation into the physical change that occurs when chocolate melts.

# What is a physical change and how can we identify them?

In this lesson, we find out what happens during a physical change, look at examples of physical changes and complete our own investigation into the physical change that occurs when chocolate melts.

## Lesson details

### Key learning points

1. Know what a physical change is
2. Describe signs that a physical change has taken place
3. Give examples of physical changes

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
Particles in a solid
Are not touching and moving fast in all directions.
Are touching and not moving.
Correct answer: Are touching and vibrating on the spot.
Are touching but can move past each other.
Q2.
Liquids can be compressed because there are spaces between the particles.
True
Q3.
Gases can flow because the particles are able to move in all directions.
False
Q4.
What happens to particles when they are heated?
They have no energy.
They have the same amount of energy.
They lose energy.
Q5.
Which of the following is condensation?
Correct answer: A gas becoming a liquid.
A liquid becoming a gas.
A liquid becoming a solid.
A solid becoming a liquid.

## Exit quiz

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### 5 Questions

Q1.
Liquids can flow because ...
The particles are not arranged in a regular pattern.
The particles can move freely in all directions.
Correct answer: The particles can slide past each other.
The particles have lots of energy.
Q2.
When water becomes ice the process is called ...
Boiling
Condensing
Melting
Q3.
Burning paper is an example of a physical change.
True
Q4.
Sugar dissolving in water is an example of a physical change.
False