Ready-made science week
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Inspire your class every day during British Science Week with these fun experiments linked to the theme of ‘Change’!
Monday
Chemical change
Main activity
- Show the class a shiny new copper coin and an older dull and dirty-looking copper coin.
- Place the dull coin in a beaker of pure lemon juice for about five minutes.
- Remove the coin. What has changed?
- The coin is dull because oxygen in the air slowly changes the shiny copper surface to a dull copper oxide. The lemon juice contains a weak acid which reacts with the copper oxide and removes it, changing the surface to shiny copper again.
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Published 26 February 2020
Carole
on 4 March 2020
Science week
can't wait to try these with my sen children