TEACHERS
GALLERY
PRICING
SIGN IN
TRY ZURU
GET STARTED
Loop
Audio
Interval:
5s
10s
15s
20s
60s
Play
1 of 6
Slide Notes
Download
Go Live
New! Free Haiku Deck for PowerPoint Add-In
Atomic Theories
Share
Copy
Download
0
210
Published on Nov 19, 2015
No Description
View Outline
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
1.
MODERN THEORY - 20TH CENTURY
Electrons are found in electron clouds, not paths.
Electrons paths cannot be predicted.
2.
BOHR - 1913
Electrons travel in definite paths.
Electrons jump between levels from path to path.
3.
RUTHERFORD - 1911
Most of an atom's mass is in the nucleus.
He conducted the gold foil experiments.
Atoms contain mostly empty space.
Electrons move in empty space in the atom.
There is a small, dense, positively charged nucleus.
4.
THOMSON - 1897
His theory of atomic structure led to the "plum-pudding model.
He conducted the cathode-ray tube experiment.
There are small, negatively charged particles inside an atom.
5.
DALTON - 1803
Elements combine in specific proportions.
He conducted experiments in combining elements.
Atoms of the same element are exactly alike.
Atoms of different elements are different
6.
DEMOCRITUS - 440 B.C.
All substances are made if atoms.
Atoms are small, hard particles.
Atoms constantly move.
Atoms are "uncuttable."
Sharisa Tyma
×
Error!