Question

Define melting point. What is the effect of pressure on melting point?

Answer 1

Melting point:

• It is defined as the temperature at which a substance starts melting.
• At this point, the state of the substances changes from solid to liquid.
• , For example, the melting point of ice is$0°\mathrm{C}$. i.e. ice melts at $0°\mathrm{C}$

Effect of pressure on melting point:

• The effect of pressure on a melting point will depend on the type of substance that is under consideration.
• Generally, increasing the pressure will increase the melting point of the substance.
• But for water increase in pressure will decrease the melting point.