ATOMIC MODEL TIME LINE PROJECT
To help you put together the story of what we know about the “atom”, you will
create a timeline depicting the development of the scientific model of the atom. It
has been through new discoveries by philosophers and scientist in physics, as well as
chemistry, that the model of the atom has expanded and changed over time. Your assignment is
to research the major contributors and significant discoveries that have impacted the atomic
model and, from this material, develop a timeline and present this timeline to class .
Your timeline MUST:
1. Include the following scientists:
a. Aristotle
h. Max Planck
b. Robert Milliken
i. Ernest Rutherford
c. Joseph John Thompson
j. Erwin Schrödinger
d. Neils Bohr
k. John Dalton
e. James Chadwick
l. Democritus
f. Louis Debroglie
g. Werner Heisenberg
2. Include at minimum the following pictorial models of the atom:
a. Indivisible, solid sphere model
b. Electron cloud model
c. Planetary or solar system model
d. Plum (raisin) pudding model
e. Rutherford’s nuclear model
3. Be chronological in its sequence, with dates clearly shown. Match the following
dates with the corresponding scientist.
400 BC
Mid 300’s BC
1803,1805,1808
1897
1897
1900
1911
1912
1924
1926
1927
1932
4. Contain, through pictures and/or explanations the significant contributions and
experiments of those scientists and atomic models listed above.
5. You may use any resource available to you including, but limited to your
textbook, Internet, parents, siblings, etc.
6. You must cite the source of your information, including people
7. Be neat, legible and eye appealing (use 3-5 colors)
8. Be larger than 8.5 x 11 inch size.
Your time line is due on ___________________________ at the beginning of class. You do not
have to follow the typical timeline format; you may be creative and use any format you wish.
NO LATE TIMELINES WILL BE ACCEPTED
You will be graded on the rubric attached.
ATOMIC TIME LINE RUBRIC
Criteria
Promptness
Scientists
4
Project submitted
on time
3
Final Grade:
2
1
0
Project was not
submitted
12 scientist
included
All required
models included
(5)
11-9 scientist
included
1 of the required
models omitted
(4)
8-6 scientist
included
2 of the required
models omitted
(3)
5-3 scientist
included
3 of the required
models omitted
(2)
2-0 scientists
included
1 or no models
included
Websites
Student used 4 or
more websites as
resources
Student used 3
websites as
resources
Student used 2
websites as
resources
Student used 1
website as a
resource
Student used no
websites as
resources
Non-internet
sources
Student used 2 or
more noninternet sources
All sources cited
on time line
Student used 1
non-internet
source
Some sources
cited on time line
Time line is
chronological
and all dates are
shown
Contains
thorough pictures
and explanations
of the significant
contributions and
experiments of
the scientists and
atomic models
chosen
Time line is
chronological,
some dates are
shown
Contains
thorough pictures
or explanations of
the significant
contributions and
experiments of
the scientists and
atomic models
chosen
Legibility
Project is neat
and writing is
legible with no
grammatical or
typographical
errors
Size
Eye Appeal
Pictorial
models
Sources cited
Chronology
Scientific
contributions
Student used no
non-internet
sources
No sources cited
on time line
Dates are shown,
but not
chronological
Project is neat and
writing is legible
with few
grammatical or
typographical
errors
Time line is
chronological, but
no dates are
shown
Contains
somewhat
thorough pictures
and/or
explanations of
the significant
contributions and
experiments of the
scientist and
atomic models
chosen
Project is not neat,
but writing is
legible with no
grammatical or
typographical
errors
Project is not
neat, but writing
is legible with
few grammatical
or typographical
errors
Project is not
neat and writing
is not legible
Project is 21.5” x
29.5” (poster) or
larger
Project is < poster
size, but at least
12” x 18.5”
Project is <12” x
18.5”, but at least
8.5” x 14”
Project is < 8.5”
x 14” but larger
than 8.5” x 11”
Project is 8.5” x
11” or smaller
Project uses at
least 5 colors
Project uses at
least 4 colors
Project uses at
least 3 colors
Project uses at
least 2 colors
Project uses only
1 color
Contains vague
pictures and
explanations of
the significant
contributions and
experiments of
the scientists and
atomic models
chosen
Time line not
chronological
and dates are not
shown
Contains no
pictures or
explanations of
the significant
contributions and
experiments of
the scientists and
atomic models
chosen