scientists Flashcards
(5 cards)
1
Q
What were daltons postulates and which were correct/wrong?
A
WRONG:
All elements made of tiny INDIVISIBLE particles called atoms
All atoms of an element are identical
CORRECT
Atoms combine in whole number ratios to form compounds
Atoms combine, seperate and rearrange but never change into atoms of another element in a chemical reaction
1
Q
who was thomson
A
cookie model and using cathode ray tube experiment found the electron
2
Q
milikan
A
found electron charge of negative one by oil drop experiment
3
Q
rutherford
A
fired particles through a thin sheet of gold and found the presence of a nucleus and discovered the proton and the neutron along with chadwick
4
Q
niels bohr
A
electrons move in circular orbits at fixed distances(was wrong)
