What is a Molecule?

What is a Molecule?

Definition of a Molecule:

A molecule is formed when two or more atoms chemically bond together. It is the smallest unit of a compound or element that retains its chemical properties.

Types of Molecules:

A. Molecules of Elements

• These contain atoms of the same element bonded together.

• Examples:

  • Oxygen (O₂)

  • Nitrogen (N₂)

  • Chlorine (Cl₂)

(Diagram: Representation of O₂, N₂, Cl₂ molecules)

B. Molecules of Compounds

• These contain atoms of different elements bonded together.

• Examples:

  • Water (H₂O)

  • Carbon Dioxide (CO₂)

  • Ammonia (NH₃)

(Diagram: Representation of H₂O, CO₂, NH₃ molecules)