Alloys - Compositions, Properties and Uses
① Steel
Components: Iron, Carbon
Properties: Hard and Strong
Uses:
- Construction of buildings and bridges,
- manufacture of ships
- manufacture of spare parts for automobiles
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Property | Metals | Non Metals |
---|---|---|
Physical State | Most metals are solids at room temperature except mercury which is a liquid. Gallium and Cesium also changes into liquid at slightly above room temperature. | Non Metals exist in all states. Eleven are gases, bromine is liquid while others are solids. |
Melting and Boiling Point | Generally have high melting and boiling points. (Exceptions are Gallium, Mercury, Sodium and Potassium.) | Generally they have low melting and boiling points. Exceptions are: Carbon, Boron and Silicon. |
Density | They have high density except Sodium and potassium. | Low denisty (Diamond is an exception.) |
Lusture | Metals shine and are lustrous. | Non-metalls appear dull. (Exceptions are Diamond, graphite and iodine.) |
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