Atomic Theory Timeline 3-S
Storyboard Text
- Democritus
- All Matter is made of "Atoms"! They are small, hard, and can not be divided into smaller particles!
- 430 BC
- 1810
- John Dalton
- Atoms are tiny, solid 'balls'. I'm going to make the first atomic theory that talks about this.
- J.J Thompson
- Atoms are smaller than you think. There is a negatively charged atom, the electron. They call my model of this the "raisin bun model".
- 1886
- Ernest Rutherford
- The atom has protons and the nucleus. Atoms have positive particles in the middle, and it is mostly empty.
- 1911
- Robert Millikan
- Using the oil drop experiment, I will be able to deduce the electric charge of an electron.
- I'm going to improve upon Rutherford's models and prove that electrons moves around the nucleus in "shells".
- Niels Bohr
- 1911-1913
- James Chadwick
- Along with Rutherford, I am able to discover neutrons which are particles with no charge.
- 1932
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