Changing materials
Answers are for parents and teachers.
1
Find five things in your kitchen. Write which are solids and which are liquids.
For example: solids such as a spoon, a plate, a pan; liquids such as water, milk, oil. Check each child’s sorting.
2
With an adult, put an ice cube on a saucer. Watch it for ten minutes. What happens? Where does the water come from?
The ice melts into water as it gets warmer. The water is the same material as the ice, changed from a solid to a liquid.
3
Watch a grown-up cook something simple, such as an egg or toast, from a safe distance. Tell them how it looked before and after. Could it change back?
The food becomes firmer or harder and changes colour. Cooking makes a new material that cannot be changed back.
4
Name one thing that melts and one thing that freezes. Draw each of them before and after.
For example: chocolate or butter melts; water or juice freezes. The drawings should show a solid becoming a liquid, or a liquid becoming a solid.