States of matter

States of matter

Revision

Different states of Matter

• Matter is the scientific word for what everything is made of.

• Matter can be found in 3 different states: Solid, Liquid and Gases.

• Solid matter in a fixed shape.

• Liquid is not in a fixed shape, it takes the shape of the container.

• Gas also has no fixed shape and they spread out more easily

• Your body contains the 3 states of matter: bones and teeth are solid, blood & tears are liquid, and lungs contains gas.

3.2 Water

• Water can exist in the 3 stages. Solid - ice, liquid - runny water, gas - steam.

• We call water gas in the air: vapour.

• When water changes from a liquid to a gas or solid to a liquid, we say it undergoes a change of state.

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Solid, Liquid & Gas in the water cycle.

• Liquid form - rain and water in the sea and lakes.

• Solid form - snow and hail

• Gases form - vapour

3.3 Heating Matter

• When you warm up solids such as ice and butter it changes into a liquid.

• When a solid changes into a liquid we say it has melted.

• Gold can be heated under very high temperature and change from a solid to a liquid.

3.4 Cooling Matter

• When a liquid is cooled enough it turns into a solid.

• We say it solidifies or Freezes.

• Freezing is the reverse of melting.

• Melting and freezing are changes of state.

• Since a solid can change to a liquid and back to a solid we say the state is reversible.

Multiple Choice

This is a material with a fixed shape. It does not flow________

• liquid

• solid

• gas

Multiple Choice

What word is used to describe a liquid changing into a gas?

• evaporate

• condensate

• melt

Multiple Select

Matter can be found in different stages:

• Liquids only

• soids and liquids only

• Solids, liquids and gases.

Multiple Choice

When a solid such as a chocolate is heated it changes to a_____

• liquid

• gas

• solid

Multiple Choice

Melting is the _______of freezing.

• none of these answers

• same

• reverse

Multiple Choice

This is gold in which form?

• solid

• liquid

• gas

Multiple Select

This image shows water in which state/states?

• solid

• liquid

• gas

• none of these options

Multiple Choice

What process is taking place here?

• freezing

• melting

• cooling

Multiple Choice

Gold melts at________

• very high temperatures

• very low temperature

• Gold cannot melt

Multiple Choice

True or Fase: The three stages of matter can be found in our bodies

• True

• False

• None of the above