Good insulation is when the material protects the heat from escaping. Bad insulation is when the material is unsecure and the heat escapes.
The best insulator for keeping something hot is paper. The worst insulator for keeping something hot is glass.
The best insulator for keeping something cold is polystyrene. The worst insulator for keeping something cold is tin.
The best insulator for keeping things hot and cold is polystryene.
LI: to determine the insulative properties of materials.
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