New
New
Year 4

Properties of solids, liquids and gases

I can describe simple properties of solids, liquids and gases.

New
New
Year 4

Properties of solids, liquids and gases

I can describe simple properties of solids, liquids and gases.

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Lesson details

Key learning points

  1. Substances can exist as different states of matter: solid, liquid and gas.
  2. Solids, liquids and gases have different properties.
  3. A solid has a fixed shape and volume but some solids can change shape when a force is applied.
  4. Liquids can be poured easily and take the shape of the bottom of the container that they are in.
  5. Gases are often invisible. They escape from an unsealed container and have no fixed shape or volume.

Keywords

  • States of matter - The three common states of matter are solid, liquid and gas.

  • Solid - A solid has a fixed shape and volume but some solids can change shape when a force is applied.

  • Liquid - A liquid can flow, has a fixed volume and takes the shape of the bottom of its container.

  • Gas - A gas can flow, has no fixed volume and takes the shape of the whole of its container.

  • Properties - The properties of a material or substance are its qualities or things it can do.

Common misconception

A material can only exist as a solid, liquid or gas, rather than having different forms at different temperatures. Gases have no mass or volume.

Teaching slides explain that most materials can exist in different states and that gases have a mass and volume. Investigations help children explore the properties of materials in different states.

Encourage children to talk about materials in their “solid state”, “liquid state” and “gas state”. Including the word state helps embed the idea that one material can exist in different forms.
Teacher tip

Equipment

Water balloons, access to a freezer, water.

Content guidance

  • Risk assessment required - equipment

Supervision

Adult supervision required

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Materials are...
used to make curtains, clothes and bedding.
Correct answer: the substances that objects are made of.
used only for building.
Q2.
Which of the following are not materials?
An image in a quiz
plastic
Correct answer: pencil
wood
Correct answer: table
Q3.
Which of the following are materials?
Correct answer: air
toy
Correct answer: wood
book
Q4.
Match the material to the property.
An image in a quiz
Correct Answer:wood,cannot be squashed

cannot be squashed

Correct Answer:modelling clay,can be squashed

can be squashed

Q5.
What is snow?
An image in a quiz
frozen milk
frozen fabric
frozen cotton wool
Correct answer: frozen water
Q6.
Which of the following can be poured?
Correct answer: milk
Correct answer: orange juice
stone slabs
wooden planks

6 Questions

Q1.
Substances can exist as different states of .
An image in a quiz
Correct Answer: matter
Q2.
Which of the following are different states of matter that substances can exist as?
An image in a quiz
Correct answer: solid
Correct answer: gas
air
Correct answer: liquid
smoke
Q3.
Solids, liquids and gases have different ________.
An image in a quiz
products
Correct answer: properties
proportions
Q4.
Materials in which state can be poured easily and take the shape of the bottom of container that they are in?
solid
Correct answer: liquid
gas
Q5.
Materials in which state keep their shape (unless a force changes it) and do not flow?
gas
Correct answer: solid
liquid
Q6.
Which state of matter is often invisible to the human eye, can escape from an unsealed container and has no fixed shape or volume?
solid
liquid
Correct answer: gas

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