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Yr4 Solid, liquid and gases

The water cycle.

Evaporation - best conditions experiment.

Investigating how H2O changes from a solid to a liquid to a gas and back again and the processes involved. We discovered that when salt is added to ice, it melts the ice but the freezing point is lowered by about 8 degrees. A class WOW moment!

Investigating the weight of a gas

Solids, liquids and gases.

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Solid particles are tightly packed.

Solids

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Liquids

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Liquid particles are linked together but can slide around each other.

Liquids

Gases

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Gas particles are free to roam.

Gases

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