What is insulation? Insulation is something that stops heat from escaping.
Five insulator materials are paper, plastic, polystyrene, glass and metal.
A good insulator is polystyrene (material) because the material of polystyrene helps protect the heat from escaping.
A bad insulator is something that makes the heat escape. For example: If a plastic(material) cup has a hole the heat of the water will leak(escape).
The best insulator for keeping things warm and cold is polystyrene.
LI: To learn and practise experimental methods
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