1. Chapter 4, Section 3 Physical Science: Atomic Models Modern Atomic Theory
Dalton proposed atomic “_____________.”
J.J. Thomson found _________inside atoms.
Rutherford found ______________inside the nucleus of atoms.
Chadwick found ____________in the nucleus.
WHERE WERE THE ELECTRONS EXACTLY?

2. Physical Science: Atomic Models
The Bohr Model
______________proposed an atomic
model in 1913,
trying to
show exactly
where the _________
were.

3. Physical Science: Atomic Models
The Bohr Model
Neils Bohr proposed that __________can
_____around the ______
__________at specific
___________, which he
called “_________”or
“___________”.

4. Physical Science: Atomic Models
The Bohr Model
In simple terms, Neils Bohr’s model
said that __________
orbit the _________
like ___________orbit
around the _______.
Therfore, it is often
called the “___________” Model.

5. Physical Science: Atomic Models
Bohr based his model on his work in
___________________
(observing
colors of _______
from atoms)

6. Physical Science: Atomic Models
Bohr had noticed that when pure gases were _____________, they only gave
off __________
frequencies
(colors) of _____.
This is called
an _________________.

7. Physical Science: Atomic Models
Bohr’s theory was that:
Electrons must
________around the
nucleus, but only
at ________distances
from the __________.

8. Physical Science: Atomic Models
Bohr’s Model:
Electrons can ___________additional ____________and move outward into “_________” energy level orbits.

9. Physical Science: Atomic Models
Electrons can _____energy and “_____
_______” giving off __________as EM Radiations (_________).

10. Physical Science: Atomic Models
The Bohr Model
Different ________
from the nucleus
give different
____________of
_____________.

11. The Quantum Model- The Electron Cloud
_________________- A ____________area where electrons should exist around the nucleus.
This is _____a nice and neat set of ________paths.
___________of exact location of electrons but we can graphically represent where most of the electrons _______“be.”

12. Quantum Mechanical Model
An _______is the region of space where there is a high _________of finding an electron in an atom.
In the _________mechanical atom, _________are arranged according to their _______and _______.
The ______the energy of an orbital, the ________ its size.
s-orbitals have a __________ shape

13. Shapes of p-Orbitals
Recall that there are _______different p sublevels.
p-orbitals have a _________________shape.
Each of the p-orbitals has the ________shape, but each is oriented along a __________axis in space.

14. Shapes of d Orbitals
Recall that there are ___________different d sublevels.
Four of the d orbitals have a ____________ shape and one has a _________and ______ shape.

15. Shapes of F- orbitals
The ______F orbitals are more __________.

16. Progression of Models- Summary
Electron Cloud (or Quantum) Model
Chapter 5