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Notes

How salt dissolves in water

Niamh C Biology 1B English 1 page

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https://www.youtube.com/watch?v=xdedxfhcpWo

Water molecules are made up of 2 positive hydrogen molecules and one negatively charged oxygen molecule. Normal salt (sodium chloride) is made up of positive Na and negative Cl ions. When a salt crystal is added to water, the oppositely charged atoms in both molecules are attracted to each other. The water molecules "pull" the crystal apart and several molecules surround each individual atom which made up the salt molecules, with oppositely attracted atoms pointing towards each other.

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Biology 1B (Introduction to cells, atoms and molecules) Note on How salt dissolves in water, created by Niamh C on 25/03/2018.
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Niamh C
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