Question

2. Explian the following terms: (AS)
a)melting point b)boiling point
c)evaporation​

Answer 1

Melting Point : The temperature at which a given solid will melt. Boiling Point : The temperature at which a liquid boils and turns to vapour. Evaporation : The process of turning from liquid into vapour.

Answer 2

Answer:

The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium.

Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature. ..

Explanation:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. ... Heat from the sun, or solar energy, powers the evaporation process.