5. In which of the following physical change heat is not needed. A. Condensation C. Melting B. Evaporation D. Boiling?

Question

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Answer 1

'A' Condensation is the COOLING of a gas to a liquid. 

B, C, & D all require heat in some form . 

Answer 2

C, B, D require application of heat

A releases heat

heat is present in all, however.