Autumn leaf experiment

Follow the steps below for each type of leaf and compare results.

1. Get girls to put on the gloves, tear the leaves into pieces and place them in a glass.
2. Add just enough isopropyl alcohol to cover them. Cover the glass with plastic wrap.
3. Stand the glass in a dish half-full of hot water for 30 minutes, until the alcohol turns green.
4. Cut a strip of filter paper about 2cm wide and tape it to the centre of a pencil. Balance the pencil across the top of the glass so the strip just touches the alcohol mixture. Some of the mixture will travel slowly up the filter paper.
5. After 30-90 minutes the pigments will begin to separate. You’ll see different shades of green, and the colour the leaf will turn in autumn.