Properties of Metals
- **Physical Properties**:
- Metals are generally shiny, malleable, and ductile.
- They have high melting and boiling points.
- Metals are good conductors of heat and electricity.
- They are usually dense and have high tensile strength.
- **Chemical Properties**:
- Metals tend to lose electrons to form positively charged ions.
- They react with acids to produce hydrogen gas.
- Metals can undergo oxidation reactions with oxygen in the air.
- **Mechanical Properties**:
- Metals have a high modulus of elasticity.
- They exhibit plastic deformation under stress.
- Metals can be alloyed to improve their mechanical properties.

Properties of Non-Metals
- **Physical Properties**:
- Non-metals are usually dull and brittle.
- They have low melting and boiling points.
- Non-metals are poor conductors of heat and electricity.
- They are generally less dense compared to metals.
- **Chemical Properties**:
- Non-metals tend to gain electrons to form negatively charged ions.
- They do not react with acids to produce hydrogen gas.
- Non-metals can undergo reduction reactions with metals.
- **Mechanical Properties**:
- Non-metals have a low modulus of elasticity.
- They are prone to fracture rather than plastic deformation.
- Non-metals can also be used in composite materials to enhance their mechanical properties.