Atomic Theory People Flashcards
What did democritus do
He developed the concept of the atom as an indivisible unit of matter - greek, old
What did Lavoisier do
Law of conservation of mass -
What did Davy do
That electrons exist in matter and can be exchanged
What did Dalton do
He introduced atomic theory into modern chemistry
What did JJ Thompson do
He discovered that matter had electrons and introduce the plum pudding model
What did Rutherford do
He discovered the proton and that it is in the nucleus
What did Einstein do
The photoelectric effect and that when electrons jump there is light released
What did Bohr do
Quantization of electron energies around an atom
Who thought matter was composed of indivisible units called atoms
Democritus
Who figured out that electrons have quantized energies
Bohr
Who discovered the proton and the concept that it was located in a small nucleus
Rutherford
Who postulated that matter was made up of indivisible units that were different in their mass and reactivity
Dalton
Who discovered that there are negative particles in matter and what these particles called
JJ Thompson
Who figured out matter cannot be created or destroyed in a chemical reaction (conservation of mass)
Lavoisier
Who discovered that electrons can be exchanged in a chemical reaction
Davy
