Question

Take small but equal amounts of water and milk in two different but similar containers. Freeze them by putting in a refrigerator. Now melt them in the sunshine, boil them in the same stove under the same conditions, and evaporate them completely. Note their temperature and time during changing of their states. What similarities and differences you find while changing the states of both of the materials. Support your investigation results with time and temperature graph.

Answer 1

All liquids evaporate if exposed to certain elements. The rate at which a liquid evaporates depends on its molecular structure. The other factors that affect evaporation are surface area, temperature and air movement. You can do a few fairly simple experiments to demonstrate the effect that the various factors have on the rate of evaporation.