Ceramics

  1. Ceramic is a substance that is made from clay and hardened by heat in a furnace maintained at a high temperature.
  2. Clay is composed of aluminosilicate with sand and iron(III) oxide as impurities.
  3. Examples of ceramics include
    1. Tiles
    2. Cement
    3. Bricks
    4. porcelain
  4. The properties of ceramics include the following:
  5. The differences between the properties of ceramics, metals and non-metals are given below

Property Metals Non-metals Ceramic
Hardness Hard but malleable and ductile Soft and brittle Hard but brittle
Density High Low Average
Melting point High Low Very high
Resistance to heat High Low Very high
Heat and
Electrical conductivity
Good
conductor
Good
insulator
Good
insulator
Chemical reactions Corrodes Corrodes Stable, does not corrode

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