This unit develops work on solids, liquids and separating mixtures in the key stage 2 programme of study. It builds on
unit 4D 'Solids, liquids and how they can be separated',
unit 5C 'Gases around us',
unit 5D 'Changing state',
unit 6C 'More about dissolving' and
unit 6D 'Reversible and irreversible changes' in the key stage 2 scheme of work.
The unit builds on ideas introduced in unit 7G 'Particle model of solids, liquids and gases'.
Pupils will have many opportunities in later units to try to explain phenomena in terms of particles,
eg changes of state in unit 8I 'Heating and cooling', digestion in unit 8A 'Food and digestion', crystal size related to rate of cooling in unit 8H 'The rock cycle', the behaviour of gases in unit 9L 'Pressure and moments'.
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