Always looking for novel ways to introduce watercolours - we made ice cubes coloured by food colourants and we created pictures as they melted
Making pictures using paper circuits and circuit stickers
We tested the theory that oil is hydrophobic by using wax crayons, oil pastels, marbling, masking fluid and watercolours to make great pictures
You can destabalise effervescent tablets by adding water. A chemical reaction mixes the acids and the sodium bicarbonate and releases carbon dioxide. Try to capture this gas in a tube and the pressure builds up until it explodes.