Atomic Theory Timeline
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Atomic Theory Timeline
🧪 Part 1: Key Scientists and Discoveries
Democritus was an ancient _____________ philosopher who lived around _______ BCE. He believed that all matter was made of tiny, indivisible particles called ____________. His ideas were based on _____________ thinking rather than experimental evidence.
The word "atom" comes from the Greek word "atomos" which means _______________.
📅 Part 2: Timeline Ordering
_____ Niels Bohr (electron orbits)
_____ Democritus (first atomic idea)
_____ J.J. Thomson (discovery of electron)
_____ John Dalton (modern atomic theory)
_____ Ernest Rutherford (discovery of nucleus)
🔬 Part 3: Scientific Thinking
Scientist chosen: _________________________
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