Twinkl Education Blog
13 Mar '17

British Science Week: Magic Milk Easy Experiment

This is a guest post from Emma who blogs over at Adventures and Play.

Continuing our easy science experiments in time for British Science Week, I couldn’t wait to let my four year old explore Magic Milk. Although Twinkl has information for Santa’s Magic Milk we decided to leave out the glitter. Magic Milk is a fun, quick and easy experiment for kids of all ages. If you are like us then you will want to repeat the experiment time and time again. Why not incorporate some ICT and try to film the experiment in slow motion.

Materials needed for Magic Milk

* Milk * Shallow dish * Food colouring * Containers to hold the food colouring * Liquid soap - we used washing up liquid * Dropper or syringe

Magic Milk

How to set up Magic Milk

1. Place food colouring into containers. We added water to small plastic test tubes purchased from Flying Tiger and dipped Wilton Food Colouring Gel into the water. This dilutes the food colouring and minimizes the risk of staining from the food colouring. We only used three colours but you could use as many as you have to hand. 2. Squirt liquid soap into a container so it can be easily reached. We added washing up liquid to the last tube in our test tube rack. 3. Pour milk into a shallow dish. We used semi-skimmed milk and a large lid. Ensure you have enough milk to cover the base of the dish.

Magic Milk Set-Up

Magic Milk Experiment

Use the dropper or syringe to add the food colouring to the milk. The food colouring will sit on top of the milk. The activity initiated a great discussion about colours and colour mixing.

Magic Milk Colours

Then squirt a drop of liquid soap into the middle of the dish. Watch as the milk moves quickly away from the soap.

Magic Milk Experiment

 We loved watching the chemical reaction between the soap and the milk’s fat. When the soap is added to the milk it breaks apart the protein and the fat. I lost count of how many times we repeated the Magic Milk experiment. At the end of each experiment we emptied the milk into another tray, washed the saucer and started again. We discovered it was important to use a new syringe for each experiment. If the syringe has been dipped into the liquid soap and then into the food colouring the experiment doesn’t work. Why not try experimenting in different ways? Dip a cotton bud in the liquid soap and place it in different places around the dish to see what happens. Why not substitute the semi-skimmed milk for other types. Does full fat milk react differently or does almond milk give the same result? What about cream? The possibilities are endless but I can guarantee you will want to repeat the activity again and again.

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