Write the chemical formula of calcium chloride and sodium sulphate using the criss-cross
method.

State any five postulates of Dalton's atomic theory.

Dear Student,

1.

2. The postulates of Dalton’s atomic theory are as follows:
 
  • All matter is made up of very tiny particles. These particles are called atoms.
  • An atom cannot be divided further i.e., atoms are indivisible.
  • Atoms can neither be created nor destroyed in a chemical reaction.
  • All atoms of an element are identical in all respects, including the mass, chemical properties, etc.
  • Atoms of different elements have different masses and chemical properties.

Regards,

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