Question

what do you understand by Dalton atomic theory

Answer 1

the theory that matter consists of indivisible particles called atomsand that atoms of a given element are all identical and can neither be created nor destroyed. Compounds are formed by combination of atoms in simple ratios to give compound atoms (molecules). The theory was the basis of modernchemistry

Collins English 

Answer 2

All matter is made up of small, tiny and indivisible particles called as atom.
1. atoms are indivisible.
2.atoms can't be created nor be destroyed during chemical reaction.
3. atoms of same elements are identical to each other by shape size and mass.
4. atoms combines in the ratio of small whole no. to form compounds.