Question

why milk overflows when boiled but water does not?

Answer 1

Hi!

Your question is--why milk overflows when boiled but water does not?

When milk is heated, a layer of fat called cream is formed at the top. Heating also causes some of the water in the milk to turn into water vapour. The cream does not allow this water to escape. With more heating, the vapour keeps expanding, pushing it up the cream until it bursts. Some cream and milk spills out in the process. Water does not follow this process while boiling.

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