Question

state the main postulates of dalton'satomic theory.

Answer 1

Dalton’s postulates of atomic theory of matter are as follows:

All matter is composed of very large number of very small particles called atoms.

For a given element, all atoms are identical in all respects. In particular all atoms of the same element have the same constant mass, while atoms of different elements have different masses.

Atoms are the units of chemical changes.

Chemical reactions involve the combination, separation or rearrangement of atoms.

Atoms are neither created, destroyed, divided into parts, nor converted into atoms of any other kind.

Atoms combine to form molecules in fixed ratios of small whole numbers.