What you need:
A spoon, a candle flame and some warm water
What you do:
Heat the spoon over the candle flame. Put a drop of warm water into the spoon.
What you observe:
The water sizzles and evaporates and the spoon becomes slightly cool.
How does the spoon become cool?
Evaporation is a cooling process. The spoon becomes cool due to the evaporation of water from it.
Picture Credit : Google
