D.I.Y Science – Chemical Reactions



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The D.I.Y. Science series contains some of our favourite experiments for kids to try at home. They are designed to help primary school teachers and carers inspire a child’s curiosity in science. It’s time to get hands-on.

This episode shows how detergent changes surface tension in milk and water and how you can use this to create swirling patterns using simple household items.

It is best suited to year 6 and 7 Chemistry students as an introduction to chemical changes and chemical reactions.


Find out how you can create a chemical reaction with the leftover milk at the end of the bottle.

Video Length: 2:00 mins

With thanks to Questacon.

Have you ever wondered what to do with the little bit of milk left at the bottom of your bowl? Learn how to use a chemical reaction to turn it into a swirling rainbow of colour in this short video.


What you’ll need:

2 x white plates
1 x jug of tap water
Full cream milk
Food colouring
1 x small bottle of dish detergent
1 x cotton bud/tip

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Years: 6, 7


Chemical Sciences – Mixtures and Separations; Chemical Reactions

Additional: Technology; Engineering

Concepts (South Australia):

Chemical Sciences – Properties of Matter; Changes of Matter