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Physical Properties of Metals and Non-Metals

Physical properties of metals; metals are:
  • Hard

 

  • Lustrous i.e., freshly cut surfaces of metals have characteristics shining

 

  • Malleable; the property of metals by which they can be beaten into thin sheets is called malleability

 

  • Ductile; the property of metal by which they can be drawn into wires is called ductility.

 

  • Sonorous i.e., produce ringing sound when struck on a hard surface


 

  • Good conductors of heat and electricity



​Metals: The materials which generally possess the above properties are called metals e.g., iron, copper, aluminium, calcium, magnesium etc
 


iron

 


Copper

 


Aluminium
 


Calcium
 


Magnesium


Non – metals : Materials which are soft (if solid) and dull in appearance break down into powdery mass on tapping with hammer, are not sonorous and are poor conductors of heat and electricity are called non-metals e.g., sulphur, carbon, oxygen, phosphorous etc.
 


Sulphur


Carbon
 


 


Phosphorus


Metals like sodium and potassium are soft and can be cut with a knife


Sodium
 


potassium


Mercury is the only metal which is found in the liquid state at room temperature


Mercury

 





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