Today’s lesson carried on from looking at the arrangement of particles that make up solids liquids and gases. We did three experiments to look at how easy it was for particles to move in solids, liquids and gases.

For solids, we left a piece of jelly with a coffee granule on top. We will check tomorrow to see if the colour has spread.

For liquids, we put food colouring into a boiling tube of water. We will check tomorrow to see if the colour has spread.

For gases, we mixed a brown gas a colourless gas. We did not to wait at all – the gases mixed straight away. This showed that the particles in gases were able to move much more easily that solids and liquids. This is because the particles are moving much faster and the spaces between them are much bigger.