Atomic Theory WebQuest PDF

Welcome to the Forum
Meeting of the Minds
September 23, 2066
The Quest: Your Goal
Your team has been chosen to defend one of the
significant scientists who contributed to the current
ideas surrounding atomic theory. While on CNN, the
International Foundation of Scientific Theory accused
these men to be pseudoscientists stating that their
work, while it lead to the current theory and is the
basis of the periodic table and how we classify all
elements, is false. It is your team’s duty to defend
your client’s theory in front of the Grand Science
Counsel at The Forum.
Each team will defend one of the following accused:
Democritus
James Chadwick
Niels Bohr
JJ Thomson
Ernest Rutherford
James Dalton
Erwin Schrodinger
The Quest: Your Team
Each person on the defense team has a role:
Chemist-What are the chemical concepts behind the model or theory?
You will compile experimental evidence, papers, literature, etc.
Critic-Were there opposing views? If so from whom? What evidence discounted your client’s
theory and why?
Biographer/Psychologist-Tells how the life of the scientist led to their theory. Did the life of
the scientist give him the tendency to perhaps have deluded or imagined these theories
without fact?
Historian-Tells about the historical facts and/or political events that occurred during this time
and reports on the order of thinking for period in time.
Paparazzi-Display all visuals from that era. Remember to gather images that capture the
cultural influences, historical events, and everyday life issues which will bring the particular
time period to life!
This is your defense team. Make use of all resources including the internet and print
resources like books and encyclopedias. library, computer programs like Microsoft
Powerpoint and Word to present evidence to the panel of Nobel prize winning scientists. The
statement made by International Foundation of Scientific Theory will only be retracted from
history if you and your team can prove otherwise. Good Luck!
The Quest: Your Data
Each defense team will present EVIDENCE that supports its client’s contribution
to atomic theory in an oral, electronic presentation (using powerpoint). The
presentation must be creative, should flow and tell a story building upon the
data that you’ve collected. Your data should be formatted into the following
three products.
1.
Scrapbook: You will create a spread including a journal article like
your client would have written in his time and a timeline that situates
your client among the other scientists that have contributed to the
current atomic theory. Also in this collection, you should include any
data that will help the Counsel understand the scientific environment
and culture of your client’s time.
2.
Atomic Model: You will create a visual model of your client’s work.
The model should clearly represent your client’s theory of atomic
structure.
3.
Third Piece of Evidence: You will provide the Counsel with a third
product created from the data you’ve collected. Be Creative! Make
sure that the product helps teach the Counsel the value of your clients
work.
The Quest: Your Assessment
You will be graded on the following portions of your presentation to the Counsel.
1.
Oral presentation of defense of your client
2.
Atomic model
3.
Scrapbook
4.
Your product of choice
5.
Research Pages
You will have an oral, written and visual assessment of your work. This is the
rubric that will help in the assessment of your work.
The Quest: The Clients
 Democritus
Greek Model
 John Dalton
Modern Atomic Theory
 JJ Thomson
Plum Pudding Model
 Ernest Rutherford
Nucleus
 Niels Bohr
Planetary Model
 James Chadwick
Neutron
 Erwin Schrodinger
 Wave/Quantum Model
Parton Model
Spiral through Time
440 B.C.
“atomos”
Indivisible matter
1803
4 postulates
Modern atomic
theory
1897
Protons
1908
Spherical cloud
of + charge
Thin gold foil
1913
Electrons in orbit Allowed orbitals
1932
No electric
charge
Quarks
1965
Alpha particles
Neutrino
Leptons
Ancient Greeks
4 elements
Fire
Air
Water
Earth
www.chm.bris.ac.uk/webprojects2002/
tubb/elements.htm
Aristotle
Suggested the existence of another
element
ETHER-a more perfect substance that
composed the heavenly bodies
Democritus
The laughing philosopher
Suggested that all matter was made up
of indivisible particles
“atomos”-(Greek) Cannot be divided
Modern Atomic Theory
The foundations for modern atomic theory was
laid in the late 17th and early 18th Century
Antoine Lavoisier
Explained combustion
Named oxygen
Proposed the Law of Conservation of
Mass
Joseph Proust
Law of Definite Proportions
A compound is always composed of the
same elements in the same proportion by
mass.
John Dalton
 Law of Multiple Proportions
 When different compounds are composed of
the same elements, the elements are in small
whole number ratios
 Father of Modern Atomic Theory
 All matter is composed up of indivisible,
indestructible atoms
 All atoms of the same element are exactly the
same.
 Atoms of different elements are different.
 Atoms combine in simple whole number ratios
to form compounds.
 Chemical reactions involve reorganization of
atoms.
 They are not changed.
JJ Thomson
Did experiments with Crooke’s tubes
Discovered that cathode rays were actually a
stream of negatively charged particles
“electrons”
Plum Pudding Model
Negatively charged particles (electrons) are scattered
in a sea of positive matter
Ernest Rutherford
Gold Foil Experiment
Most alpha particles passed through the
foil
A few were deflected
Most of the atom is empty space
The positive charges are centered in
the nucleus (proton).
Ernest Rutherford
Niels Bohr
Electrons move in definite paths called
energy levels
James Chadwick
Showed that the nucleus also contained
neutrons
Erwin Schrodinger
Developed the
electron cloud
model of the atom
Wave mechanics
Quantum Mechanical
Model of the Atom
Quarks
Dmitri Mendeleev
Father of the Modern Periodic Table
The Quest: More Resources
History of the Atom
http://dbhs.wvusd.k12.ca.us/AtomicStructure/AtomicStructure.html
Atom Structure
http://education.jlab.org/atomtour/index.html
dbhs.wvusd.k12.ca.us/Atomic Structure/AtomicStructure.html
www.aip.org/history/electron
http://www.howe.k12.ok.us/~jimaskew/psubatm.htm
History of the Elements
http://www.wikipedia.org/wiki/Discovery_of_the_chemical_elements
Atomic Museum: The road to the atomic age
www.atomicmuseum.com
Timelines
http://www.gsu.edu/other/timeline/quantum.html
www.watertown.k12.wi.us/hs/teachers/buescher/atomtime.asp
Images of Chemists and Equipment
dbhs.wvusd.k12.ca.us/gallery/gallerymenu.html
History of the Atom: Atomic models
members.tripod.com/~mrbeens/atom.html
Concept maps may be a great way to represent your ideas
Chemistry relationships
Division of matter
Scientific method
History of Atomic Concepts
The Quest: Credits
Ms. Kennen
http://www.geocities.com/dlkennen/webquest
Maryellen Austin
http://www.mhs-chiefs.org/faculty/science/austinm/Atomictheory/sld001.htm
http://www.howe.k12.ok.us/~jimaskew/psubatm.htm
http://chemlab.pc.maricopa.edu/periodic/default.html
http://pearl1.lanl.gov/periodic/default.htm
Periodic table simulation:
http://www.genesismission.org/educate/scimodule/cosmic/ptable.html
http://dir.yahoo.com/Science/Chemistry/Periodic_Table_of_the_Elements/
Created by Muhsinah L. Holmes, Emory University PRISM Program
Modified by Leah R. Anderson, Emory University PRISM Program
Division of Matter
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The scientific method
Atomic
concepts
Chemistry Relationships
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