Tuesday, August 17, 2010

Properties of Metals and Nonmetals


In this post we ware learning about metals , their properties and uses.

Lets first define a metal and understand the properties of metals and nonmetals.A metal is a chemical element that is a good conductor of both electricity and heat and forms cations and ionic bonds with non-metals. In chemistry, a metal is an element, compound, or alloy characterized by high electrical conductivity.We will also learn about extraction of metals and the various methods involved in extraction.

Properties of Non- Metals: Find below the properties of metals which includes the physical properties and chemical properties.

    Physical Properties:
1) Good electric conductors and heat conductors.
2) Malleable - can be beaten into thin sheets.
    3) Ductile - can be stretched into wire.
4) Possess metallic luster.
5) Opaque as thin sheet.

Chemical Properties:
    1)Metals usually have 1-3 electrons in their outer shell.
    2) Lose their valence electrons easily.
    3) Form oxides that is basic.


 Properties of Non- Metals:

    Physical Properties:
  1. Non metals are poor conductors of heat and electricity.
  2. Non metals are brittle - if a solid.
  3. Non metals are nonductile. Do not possess metallic luster.
  4. They are transparent as a thin sheet.

    Chemical Properties:
  1. Non metals usually have 4-8 electrons in their outer shell.  
  2. Non metals gain or share valence electrons easily.
  3. They form oxides which are acidic.

I hope this post was useful.

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