Activity

Fruit and vegetable colours

Summary
Crush blue, red and purple-coloured fruits and vegetables. Add acid or base to change their colour.
Science content
Biology: Features, Adaptations of Living Things (K, 1, 3, 7)
Chemistry: Chemical Changes (2, 7)
Materials
Procedure

Peel/chop fruits and veggies, to collect small pieces of coloured material.
Add to the mortar and pestle with very little water and crush to make a concentrated coloured liquid.
Pour a little of the coloured liquid into wells of the tray.
Add drops of acid and base to change the colour (or not - results are very variable).

Grades taught
Gr 4
Gr 5
Teaching site
ingridscience afterschool