What happens when you make solids smaller and smaller and smaller?
Ingredients and equipment that you will need
Some plain biscuits
A plastic bag
A rolling pin
Method and further information
A biscuit is solid. If you break the biscuit in half is it still solid?
What if you break it into so many pieces that it turns into a powder? Is it still a solid?
The answer is yes, because although the pieces are very small they do still have a definite shape of their own.
Be careful – you should ask an adult to help you with these experiments. Do your experiments in old yoghurt pots, jam jars or bottle tops. Don’t use cups or glasses in case someone thinks it’s a drink.