Question

Write five postulates of dalton's atomic theory

Answer 1

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

Answer 2

Answer :

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The following are the postulates of Dalton's Atomic Theory :-

• All matters are made up of very small particles called Atoms.
• An atom cannot be further divided into smaller particles.
• Atoms can neither be created nor be destroyed by chemical processes.
• Atoms of particular element are identical in all respects that is they have same mass, size and chemical properties.
• The atoms of one element are different from those of any other element. For Eg : The atoms of different elements can be distinguish from each other by their respective masses.
• Atoms of different elements may combine in simple whole number ratio to form compound atoms of a new substance. This, according to Dalton's Atomic Theory atom is the smallest particle of an element which cannot be further divided and that retains all the characteristics properties of that element.

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