Activity 1:
Read the following link below which contains useful information and examples about reversible changes.
In your workbooks record down any important facts about reversible changes.
http://www.bbc.co.uk/bitesize/ks2/science/materials/reversible_irreversible_changes/read/3/
Following the reading, with a partner create a venn diagram under the headings:
- Evaporation occurring: a liquid turning into a gas
- Condensation occurring: a gas is turned into a liquid
- Both condensation and evaporation is taking place
Under each heading, pairs are to research and or think about examples of reversible change. Draw your Venn diagram on a A3 coloured paper to be displayed on the science class wall.
Activity 2:
This next task requires you to complete an experiment to test if ice cream is reversible.
Before you complete the experiment, make a prediction of what you think will happen. Will the ice cream be reversible?
Take photographs of your results as you will need to present your findings on the class wall and explain what a reversible solid means. This can be presented as a poster, word document or PowerPoint.
Objective:
To determine if ice-cream can be reversible.
Equipment:
· 3 scoops ice cream
· Ice cream scooper
· Freezer
· 1 x bowl
· Timer
Method:
1. With the ice scream scooper, take 3 scoops of ice cream and place into bowl.
2. Place the bowl on the side and let it melt for 30 minutes. Use a timer to assist. After 30 minutes if the ice cream has not melted completely, keep waiting until it does so.
3. Place the melted ice cream into the freezer.