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2. Atomic Structure

Mass: The amount of matter contained in a body.
Weight: The force in which a body is attracted towards center of gravity.
Classification of matter:-
1.Matter
2.Element
Matter:It is defined ad any particles which occupies mass & space.
Element:It is a simple substance which can't be divided into two or more substances
Eg: Metals,non metals
  • All metals are solid except mercury
  • All non metals are solid or gases except bromine
Chemical Symbol: It is abbreviated from an element.
Eg: Oxygen(O), Nitrogen (N)
Mixture: A mixture is a substance that contains two or more elements or compounds.
Eg: Air is a mixture of oxygen,Nitrogen and other gases.
  • Mixtures are of two types
  1. Homogeneous Mixture
  2. Heterogeneous Mixture
Homogeneous Mixture: This is a mixture has equal composition with its mass.
Eg: Sugar will be dissolved in water
Heterogeneous Mixture: A mixture having different composition throughout its mass.
Eg: Mixture of sand & cement
Compound:When two or more chemical elements combine then it form a compound.
Eg: H+O2---->H2O
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  • Home
  • Blog
  • Sports
    • Formula One >
      • F1 standings 2020
    • MotoGP
    • IPL >
      • IPL point table 2020
      • IPL point table 2019
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    • Movies >
      • Hollywood
      • Bollywood
      • Tollywood >
        • Tollywood News
    • Trailers >
      • Hollywood movie trailers
      • Hindi movie trailers
      • Telugu movie trailers
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      • Telugu Songs
      • Malayalam Songs
      • Tamil Songs
    • Youtube Stars
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