The surface tension of liquids

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

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The effect of concentration on chemical equilibrium (observation)

Examining the colour of cobalt(II) chloride in water and hydrochloric acid.

Molecule exercise VI (Carbohydrates)

An exercise about the groups and structure of mono-, di- and polysaccharides.

Fuel cell

A fuel cell provides environment-friendly electric energy produced by the chemical...

Producing ammonia from nitrogen gas and hydrogen gas

Large-scale ammonia production requires high temperature and pressure and the presence of...

Covalent bonds in benzene molecules

In benzene there are sigma bonds and delocalised pi bonds between carbon atoms.

The viscosity of liquids

Have you ever thought about why honey flows so slowly from a spoon compared to water?

Exothermic reaction

When heated, powdered sulphur reacts with powdered zinc, releasing heat.

A non-flammable tissue

Go behind the scenes of gastronomy and film tricks: objects in flames do not always burn, do they?

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