Pupils learn that some solids e.g. salt and sand grains can be poured and behave like a liquid.
PoS - compare and group materials together, according to whether they are solids, liquids or gases
NaG - pupils should explore a variety of everyday materials and develop simple descriptions of the states of matter (solids hold their shape; liquids form a pool not a pile; gases escape from an unsealed container)
WS - pupils should group and classify a variety of materials