LEARNING OBJECTIVE:- TO RECOGNISE THE DIFFERENCE BETWEEN A SOLID, A LIQUID AND A GAS (THE THREE STATES OF MATTER).

What am I?

I am white and fluffy and the children play with me in the garden. Some grown-ups are spoil-sports and throw salt at me to try to make me go away. When the sun shines strongly I warm up and run to the lowest part of the garden. If I am feeling really energetic, I may leave the path altogether and take to the skies.

Which part of this riddle refers to : a solid? a liquid? a gas?

ACTIVITY

Look at the examples of different substances.Some are solids, some are liquids and some are gases. What do think each one is? Make a table to show your ideas.

milk, oxygen, petrol, copper, wood , hydrogen, polystyrene, blood, carbon dioxide, paper, water, wool, ketchup, oil

ACTIVITY

With your group, make up some useful rules which could help someone pick out the solids. Then do the same for the liquids and the gases.