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About Atoms & Law of Chemical Combition

                                ATOMS

Atoms are the tiny particles in the world, well everything is made up of matter, and the matter is made up of 'ATOMS'. Well, Atoms was discovered by Jonh Dalton. And also Jonh Dalton has conferred us six postulates of Atoms. 

                     Postulates Of Jonh Dalton

  • All matter is made of tiny particles called atoms, which participate in chemical reactions.
  • Atoms are indivisible particles, which can not be created or destroyed in a chemical reaction. 
  • The atom of a given element is identical in mass and chemical properties. 
  • Atoms of different elements have different masses and chemical properties.
  • Atoms combine in the ratio of small whole numbers to form compounds. 
  • The relative number is kinds of the atom are constant in a given compound. 

                 Law Of Chemical Combination

The Law of chemical combination was discovered by Lavoisier and Joseph L. Proust. And Law of Chemical combination has two parts 'LAW OF CONSERVATION OF MASS' and 'LAW OF CONSTANT or DEFINITE PROPORTION'. 

The Law of conservation of mass states that the mass can neither be created nor be destroyed in a chemical reaction.

The Law of constant or definite proportion states that "In a chemical substance the element should always be present in definite proportion by mass.

              Atomic Number & Mass Number

ATOMIC NUMBER states that the number of protons present in an atom determines the atomic number.

MASS NUMBER states that the mass of protons and neutrons which are present in the atom determines the mass number.   

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