The surface tension of liquids

We observe whether a razor blade can float on the surface of different liquids.

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Mixing substances, separating mixtures 1 (observation)

The method of separation of substances in a mixture depends on...

How long have we used fire?

In this lesson you will learn about the history of fire and the...

Bending a jet of water

A surprising phenomenon occurs when we hold a statically charged...

Fire under the ash

Catalysts can facilitate or support the process of reactions that...

Like dissolves like

Non-polar substances dissolve in non-polar solvents while polar...

Model volcano

The reaction of baking soda and vinegar tinted with red food...

Surface tension of liquids 2

In this video we are experimenting with food colourings.

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