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Question:

how do you make an insulator that prevents ice from melting quickly?

how do you make an insulator that prevents ice from melting quikly with a styrofoam food container, aluminum foil (shiny or not?) and newspaper

Answer:

I assume the ice cream is in a plastic container, Wrap that in crumpled newspaper saving some to wrap round like a blanketput that parcel in the (polystyrene) UK term boxThis means you have small trapped air pockets to reduce heat loss from convection and conductionThen put the foil on the outsideIt would also work to put it round the smaller plastic box.The idea is the shiny surface reflects radiated heat from the outside.
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