Atomic Theory
The Atomic Model Timeline
- The idea of what an atom is has changed over time.
- Different scientists and their discoveries have led to the development of the current model of an atom.
- Other examples include:
- The solar system (BIG made SMALL)
- The biological cell (SMALL made BIG)
The Democritus Model
- A Greek philosopher
- He conceived the idea of the atom to describe matter.
- Atom comes from the word atomos which means "indivisible".
- He believed that matter was finite (had a limit)
- He believed the smallest piece of matter was an indestructible and indivisible particle which he called the "atom".
The John Dalton Model
J.J. Thompson: The Plum Pudding Model
Read more about this topic: Outline Of Chemistry
Famous quotes containing the words atomic and/or theory:
“Quite often ... these little guys, who might be making atomic weapons or who might be guilty of some human rights violation ... are looking for someone to listen to their problems and help them communicate.”
—Jimmy Carter (James Earl Carter, Jr.)
“Won’t this whole instinct matter bear revision?
Won’t almost any theory bear revision?
To err is human, not to, animal.”
—Robert Frost (1874–1963)