Solids and liquids
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  • Introduction
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Everything around you is made up of tiny particles. Each individual particle is far too small to see. In some materials the particles are very tightly packed together and can't move around, so the material keeps its shape. Materials like this are called solids.

In other materials the particles are not so tightly packed and are able to move around each other. This means that the material can change shape to fit whatever container it is put in. Materials like this are called liquids. It is possible for solids to change into liquids and for liquids to change back into solids.

In this worksheet  you can try to answer some questions about solids and liquids and test what you know about these two forms of matter.

  • Question 1
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What is the word that describes what happens when a solid changes in to a liquid?

solidifying

vanishing

melting

dissolving

  • Question 2
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What is the word that describes what happens when a liquid turns into a solid?

freezing

scorching

steaming

moulding

  • Question 3
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Which of these are properties of a liquid?

can be poured

always keeps the same shape

can be cut into smaller pieces

takes the shape of its container

expands to fill its container

has a level surface

  • Question 4
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Which of these are properties of a solid?

it is hard

it forms droplets

it keeps the same shape

it can be broken into smaller pieces

it can be shaped

it can be poured

  • Question 5
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True or false, once a solid has melted and turned into a liquid it can never become solid again.

true

false

  • Question 6
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What do you have to do to change a solid into a liquid?

dissolve it

crush it into very small pieces

heat it

cool it

  • Question 7
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Do all substances freeze at the same temperature?

yes

no

Progress