---Topic Dalton atomic Theory--- Class 9th students' pptx.

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 …