Physical Science
Goal 5A Test
Review Technique 1
Flash Cards
Solid Sphere
Atomic Model
Dalton
Plum Pudding Model
Thomson
Planetary Model
Bohr
Discovered electron
Thomson
What was C.R.T. used for?
Thomson used to discover
electrons and they are
negative. e-
Gold Foil Experiment
Scientist
Rutherford
Nucleus is
1….
2….
Small
+
Atom is mostly
Empty space
WHY did only 1 of every
20,000 alpha particles
bounce back when shot
through the gold foil?
Atom mostly empty space
What is charge of an
electron?
-
What is charge on a
nucleus (proton)
+
The one Dalton postulate
that was disproved
Atoms can not be broken
down to smaller pieces.
Total number of electrons
on each of the first three
energy levels of Bohr’s
Model.
2
8
18
Bohr’s Model: which
energy shell has the
lowest energy?
Inside (1st)
Bohr’s Model: energy
level with the highest
energy level?
Outer most
How can an electron
jump from lower to higher
energy shell?
Gain a quantum of energy
What happens when an
electron jumps from a
higher to a lower energy
level?
Gives off a quantum of
energy
An electron exists in the
area of highest
probability…
(atomic model?)
Electron Cloud
The most currently
accepted atomic model
Electron cloud
Observation
1
Questions
2
Hypothesis
3
Experiment / Test
4
Analysis
5
Theory
6
Scientific Law
7
Yes
Retest
8
NO
Revise Hyp.
9
Scientific Method:
Data Tables are located
in the ….
Experiment / Test
Scientific Method:
Graphs are located in
the…
Analysis
Dalton
Thomson
Rutherford
Bohr
Electron Cloud - Schrodinger