Question

State the postulates of Dalton's atomic theory

Answer 1

Dalton's atomic theory: Dalton’s atomic theory states that all matter, whether an element, a compound or a mixture is composed of small particles called atoms.

Postulates of Dalton's atomic theory

1. All matter consists of indivisible particles called atoms.
2. Atoms of the same element are similar in shape and mass, but differ from the atoms of other elements.
3. Atoms cannot be created or destroyed.
4. Atoms of different elements may combine with each other in fixed, simple, whole-number ratios to form a compound.
5. Atoms of the same element can combine in more than one ratio to form two or more compounds.
6. The atom is the smallest unit of matter that can take part in a chemical reaction.