The effect of pressure change on chemical equilibrium

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

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Separating mixtures if one of the substances dissolves in water.

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This animation shows the electron configuration of the calcium atom.

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Molecule exercise VII (Organic nitrogen compounds)

An exercise about the groups and structure of organic nitrogen compounds.

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The method of separation of substances in a mixture depends on their different properties.

The surface tension of liquids

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

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