Question

Mention 4 substances that shows change of state

A) at normal temperature

B) at high temperature

Answer 1

At normal temperature
1)Melting of ice
2)Naphthalene
3)Sublimation of dry ice(dry ice is solid carbon di oxide)
4)Phase change of Liquid Petroleum Gas.(liquid phase to gaseous phase )

At high temperature
1)Evaporation of water
2)Buring of Camphor
3)Burning of metal sodium
4)Buring of coconut oil
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