Theory:

S.No
Properties
Metals
Non-metals
1
Physical state
- Solid under NTP (Normal Temperature and Pressure).
  • Mercury is liquid at room temperature. 
  • Cesium (Cs), rubidium (Rb), francium (Fr) and gallium (Ga) become liquids at or just above room temperature.
- Solid, liquid and gases at NTP.
  • Sulphur, phosphorus occur in solid-state
  • Bromine occurs in liquid state.
  • Gases like oxygen, nitrogen, etc. occur in the gaseous state.
2
Hardness
- Hard
  • Even metals such as sodium and potassium are soft enough to be cut by a knife.
- Soft
  • Except diamond
3
Lustre
- Shiny
- Dull appearance
  • Except graphite, diamond and
    iodine.
4
Density
- High density
  • Except sodium and potassium, which a have low density.
- Low density
  • Except diamond
 
5
Melting and boiling point
- High
  • Except sodium, potassium, mercury and gallium.
- Low
  • Except carbon, silicon and boron.
6
Tensile strength
The capacity to withstand strain without breaking is called tensile strength. Metals have this property.
  • Except zinc, arsenic and antimony.
Non - metals do not have this property.
  • Except carbon fibre
    as tensile as steel.
7
Malleability
The tendency of hammering metals
into very thin sheets called malleability. metals are malleable.
  • Aluminium has the property to transform into silvery foils.
Non-malleable
 
 
 
When non-metals are hammered, they will form a powdery mass as they are in solid state and are brittle in nature.
8
Ductility
Metals can be drawn into thin
wires. Hence, ductile.
  • Copper wires
- Non-ductile
  • Except carbon fibre, which is highly ductile.
9
Conductivity
- Good conductors
  • Except bismuth and tungsten.
- Bad conductor of electricity
  • Except graphite
10
Sonorous
When hitting metals, they produce a typical sound called sonorous.Non-sonorous (do not produce sound when hit).