Use the pipettes or droppers to drop different colours of water onto a plastic plate and record which new colours are created. (science-sparks.com)
The main attraction for me was the stunning colour of the water, -LSB-...] (theaussienomad.com)
But I believe that you become the kind of parent your child needs — and if that means raiding my kitchen to explore baking soda and vinegar reactions, putting a bag of flour and a jug of water in my curious 2.5 yo hands or mixing up six different colours of water to explore absorption so be it! (rainydaymum.co.uk)