Particulate Nature of Matter

Liquid to Gas

Evaporation or Boiling ( endothermic)

Gas to Liquid

Condensation or Liquefaction (exothermic )

Solid to Liquid

Melting

Liquid to Solid

Freezing or Solidification

Solid to Gas

Sublimation

Gas to Solid

Sublimation

Basic units of matter

Atoms, Ions and Molecules

Exothermic

Is the conversion that involve cooling lose energy

Endothermic

Is conversion that involve heating gain energy

Conversion that undergoes exothermic

Gas to Liquid - Condensation or Liquefaction

Liquid to Solid - Freezing or Solidification

Gas to Solid - Sublimation

Conversion that undergoes endothermic

Liquid to Gas - Evaporation or Boiling

Solid to Liquid - Melting

Solid to Gas - Sublimation

Diffusion

Is the movement of particles from the region of higher concentration to the region of lower concentration, so that the particles become evenly distributed.

Matter

Is anything that occupies space and has mass.

State of matter

Is the form in which matter exist.