The effect of concentration on chemical equilibrium

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

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The surface tension of liquids (observation)

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

The effect of pressure change on chemical equilibrium (observation)

Examination of dissolved carbon dioxide in a bottle of carbonated water.

Molecule exercise II (Polarity)

An exercise about the polarity of molecules.

Lead-acid battery

Electrochemical processes in a lead-acid battery produce electric current.

Covalent bonds in benzene molecules

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

Melting and freezing

During freezing hydrogen bonds are formed between water molecules resulting in a...

Molecule exercise VI (Carbohydrates)

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

Fiery orange peel

When the essential oil from the peel touches the candle flame, it burns and creates a...

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