Contribution to the Atomic theory Timeline

• More than 2400 years ago, he named the smallest piece of matter “ATOMOS,” meaning “not to be cut.”
• Atoms were small, hard particles that were all made of the same material but were different shapes and sizes.
• Atoms were infinite in number, always moving and capable of joining together

1. Dalton’s Atomic theory:

• First recorded evidence that atoms exists.
• Using his theory, Dalton rationalized the various laws of chemical combination

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<a data-ved="2ahUKEwiOs9HY4_DtAhXbR30KHV_KBoEQFjAAegQIBBAC" href="https://mycbseguide.com/blog/structure-atoms-class-9-notes-science/" ping="/url?sa=t&source=web&rct=j&url=https://mycbseguide.com/blog/structure-atoms-class-9-notes-science/&ved=2ahUKEwiOs9HY4_DtAhXbR30KHV_KBoEQFjAAegQIBBAC" rel="noopener" target="_blank">Structure of the Atoms class 9 Notes Science | myCBSEguide ...</a>