Define melting and vaporisation.

Melting and vaporization are two important processes that involve changes in the state of matter. Here’s a closer look at each one:

What is Melting?

Melting is the process where a solid turns into a liquid. This occurs when the temperature of the solid increases to its melting point, causing the particles to gain energy and move more freely.

Key Points about Melting:

• Example: Ice melting into water.
• Energy Requirement: Heat energy is absorbed during melting.
• Temperature: Each substance has a specific melting point.

Understanding Vaporization

Vaporization is the transition of a substance from a liquid to a gas. This can happen in two ways: evaporation, which occurs at any temperature, and boiling, which happens at the boiling point.

Important Aspects of Vaporization:

• Example: Water turning into steam.
• Energy Requirement: Heat energy is also absorbed during vaporization.
• Temperature: The boiling point is the temperature at which vaporization occurs throughout the liquid.

Both processes are essential in various natural and industrial applications, illustrating how matter can change forms with the addition or removal of heat energy.