In this video, which is aimed at KS3 pupils, a video is shown with changes of state of matter for ice and wax.
The melting ice takes place on a two surfaces, a conductive surface (aluminium pan) and and an insulating surface (wooden chopping board). The video shows how the time of melting differs for each surface.
The experiment also shows wax freezing on the same two surfaces.
Pupils can compare the times and suggest explanations as to why the times differ. The video includes prompts to support their thinking.
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