A series of videos demonstrating various simple, fun practicals and demonstrations that you can use to teach separating mixtures

Each video shows how to carry out the demonstration and explains the science behind it. You don’t need any specialist equipment – all of the demonstrations use things you can buy in a supermarket. 

Heavy sugar demonstration video

Investigate this topic with your learners

Use this demonstration as part of a class investigation on dissolving, density and ‘heavy’ sugar, with accompanying classroom slides and teacher notes.

To Investigate the amount of sugar in a soft drink by comparing its weight with a diet drink.

Rainbow of colours demonstration video

Separate the inks in felt tip pens with a demonstration of chromatography for primary students.

Racing liquids demonstration video

Investigate this topic with your learners

Use this demonstration as part of a class investigation on viscosity and ‘racing’ liquids, with accompanying classroom slides and teacher notes.

Separate the inks in felt tip pens with a demonstration of chromatography for primary students.

Lava lamp demonstration video

Investigate this topic with your learners

Use this demonstration as part of a class investigation on gases, liquids and the ‘lava lamp’, with accompanying classroom slides and teacher notes.

Make a lava lamp to explore mixing liquids and more concepts in primary science.

Suspended ice demonstration video

Investigate the different densities of water, oil, and ice with primary students.

Different dissolving demonstration video

Dissolve polystyrene cups to demonstrate a different type of dissolving to primary students. This demonstration uses nail polish remover please handle this with great care and follow the safety guidance on the packaging.

 

Additional information

These videos are from the Catalyst Primary Science CPD series and are presented by Sue Halliday & Lorelly Wilson.

For more information, you can watch our introduction to the video series. Or you can watch Alan Heaton introduce the background to series, and thank the presenters.

Primary science video demonstrations