Solids and liquids (4D0)
The theory behind the difference between solids and liquids.
Playing time: 3 min (V710)
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Snowball (4D2)
How crushing snow makes some of it melt and then refreeze into a solid and so fuse together.
Playing time: 3 min (V489)
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Playing time: 1 min (V711)
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Lava (4D5)
Lava is a good example of a liquid that cools into a solid. As it changes from liquid to solid it also changes colour.
Playing time: 2 min (V712) |
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Gas burner (4D6)
A gas flame shown heating a liquid (water) so that the water evaporates quickly (due to energy input) and finally boils as well.
Playing time: 9 min (V713)
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Playing time: 4 min (V714)
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Dissolving (4D8)
Investigating how coffee granules dissolve.
Playing time: 2 min (V715)
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Insoluble (4D9)
The idea that some things will not dissolve in others using oil and water.
Playing time: 3 min (V716)
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Filters at home (4D10)
Filters that we use at home, such as for tea and coffee.
Playing time: 4 min (V946)
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