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Title: Atomic Theory Timeline
Description: Aristotle, Democritus, Rutherford, Bohr etc.
Description: Aristotle, Democritus, Rutherford, Bohr etc.
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Democritus: Proposed that all matter, including space and time, was made up of small atoms
...
Showed little evidence yet as a respected person his idea
was influential and important in evolution of atomic theory
...
His theories were very influential as he was Alexander the
Greats tutor
...
He recognized the
existence of atoms of elements and that compounds established from the unification of these atoms
...
JJ Thomson: Pointed out that atoms are a uniform positive sphere which contain
negatively charged particles called electrons and positively charged matter
...
Rutherford: He reasoned that all of an atom’s positively charged particles made up the
nucleus
...
Bohr: Bohr developed a model which showed that electrons didn’t orbit randomly around
the nucleus
...
He proposed that they moved in specific layers at certain
distances, and they could jump from a path on one level to another
...
After discovering 10 new ‘transuranium’ elements, he realised that the table would be too
wide
...
Title: Atomic Theory Timeline
Description: Aristotle, Democritus, Rutherford, Bohr etc.
Description: Aristotle, Democritus, Rutherford, Bohr etc.