For a while now my youngest has been asking me to do the “milk experiment” so this week we finally got round to it.
I really enjoy simple experiments that are full of colour. They are visually awesome and my kids tend to remember them.
If you want to give this experiment a try then the following is a list of what you will need.
- Milk (we found that full fat is best)
- Liquid Watercolours*
- Pipette Droppers*
- Cotton Wool Balls/Cotton Buds
- Washing Up Liquid
- Deep Plate or Pie Dish
We made a little video to demonstrate what happens when the cotton wool ball is placed into the milk…. please watch if you have 47 seconds extra of spare time – we think the results were amazing!
Despite the fact that some of these experiments are simple, I always love to explain the science behind them. Milk is mostly made up of water but depending on what type of milk you buy, there is also a lot of fat. When you put the washing up liquid into the milk, it bonds with the fat and, therefore, pushes the water and colour out to the sides. The molecules attack the fat in the milk which creates the swirling of the colours.
We did lots of versions of this experiment. My youngest was very disappointed when the first one wasn’t that exciting but in true STEAM Powered style, we kept on trying and found a way that worked for us.
Hope you HAVE FUN!!!