Rishita dwivedi
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This document discusses John Dalton's atomic theory from 1808. It introduces Dalton as an English chemist and teacher who was born poor but spent his life researching. His atomic theory proposed that all matter is made of indivisible atoms of different elements that have unique masses and chemical properties, marking a turning point in the study of matter.
Rishita dwivedi
- 2. This theory was coined by JOHN DALTON He was born in a poor weaver’s family in 1766 in England … He spent his most of his life in teaching and researching . In 1808 , he presented his atomic theory which was a turning point in the study of matter …
- 3. According to the Dalton’s atomic theory , all matter , whether an element of small particles called atoms ... The postulates of this theory may be stated as follows ...
- 4. (2) Atoms are indivisible particles which cannot be created or destroyed in a chemical reaction … (3) Atoms of different elements have different masses and chemical properties …