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NONMETALS

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Metals v/s Nonmetals

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Points to be consolidated

  • Oxygen is used for artificial respiration.
  • Nitrogen is the gas filled in tyres to increase its efficiency.
  • Hydrogen is filled in balloons flying up in the air.

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Elements present in food materials

  • Carbohydrate – carbon, hydrogen, oxygen
  • Protein- carbon, hydrogen, oxygen, nitrogen
  • Fat- carbon, hydrogen, oxygen

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Points to be consolidated

  • Carbon, hydrogen, oxygen, nitrogen etc are nonmetals.
  • Nonmetals are of prime importance not only for life activities but also in industrial field.

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H2O

H2SO4

KMnO4

K2CrO7

HCl

HNO3

C6H12O6

H3PO4

CO2

NO2

H2O

H2SO4

HCl

HNO3

C6H12O6

H3PO4

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Hydrogen

  • Hydrogen is the major component in the sun and stars
  • A very small quantity of hydrogen is seen in the atmosphere in free state.
  • Water is the major compound of hydrogen. Hydrogen is present in large amounts in bio substances.

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