Classify Metals & Non-Metals (Edexcel IGCSE Chemistry (Modular))

Electron arrangement

1-3 outer shell electrons

4-7 outer shell electrons

Bonding

Metallic bonding due to loss of electrons

Covalent by sharing of outer shell electrons

Electrical conductivity

Good conductor of electricity

Poor conductors of electricity

Type of oxide

Basic oxides

Acidic oxides (some are neutral)

Reaction with acids

Many react with acids

Usually do not react with acids

Physical characteristics

• Usually lustrous (shiny)

• Solid at room temperature (excluding mercury)

• Malleable, can be bent and shaped

• High melting and boiling point

• Dull, non-reflective

• Different states at room temperature

• Flaky, brittle

• Low melting and boiling points