Explain the changes that have to take place for a substance to go from solid to liquid to gas?

Answer 1

Since particles are tightly packed together solid melts when energy increases. Example: ice

SInce particles are fairly close together liquid evaporates/boils when energy increases. Example: Boiling Water.

SInce particles have little attraction in gas. It condenses when energy decreases.

Liquid solidifies when energy decreases.

By: Nivya

School: Sir John a Macdonald French immersion

Answer 2

When a substance goes from a solid to a liquid, the molecules gain enough energy to break free from their fixed positions but still remain close together. In the transition from a liquid to a gas, the molecules gain even more energy to break free from each other and move further apart, resulting in increased disorder and expansion of volume. These changes involve overcoming intermolecular forces and increasing the kinetic energy of the molecules.