The American Chemical Society has chosen YOU! You and your partner will be travelling back in time in order to meet the Greek philosopher Democritus. Democritus first introduced the concept of atoms thousands of years ago. Since then, our understanding of the atom has slowly expanded up until today. It is your job to bring him up to date.
You must communicate to him how our understanding of the atom progressed through history. What were the key steps in the development of that understanding? This is what you will be investigating in this Webquest.
The Task:
You are to develop a timeline for Democritus that outlines the key scientists and experiments associated with the development of modern atomic theory. The timeline should include the names of the scientists, a description of the accomplishments, pictures of experimental equipment or atomic models, and descriptions of important scientific laws or principles developed by these scientists.
The Process:
1. Read over the entire webquest!!!!!!!
2. Begin your research by using your textbook and the links provided in the resource section of the webquest to complete a research data sheet for each of the following 24 scientists, experiments, and atomic models:
Democritus Millikan
Lavoisier Bohr Proust David Whitehead
Thomson Chadwick
Rutherford Moseley Dalton Heisenberg
Gold Foil Experiment Mendeleev Marie Curie
Cathode Ray Tube Experiment Law of Conservation of Mass
Law of Definite Proportions Dalton's Atomic Theory
Plum Pudding Atomic Model Rutherford Model
Bohr Planetary Model Quantum Mechanical Model
As you do your research on the big "24" you MUST reference what site, book, source you used to gain the information. Include all this information on your research data sheet. Any project turned in without one receives a ZERO!
3. Prepare a chronological briefing (time line) for Democritus It should include information from your research data sheets presented in chronological order and pictures to illustrate your information.
4. This is to be completed on a piece of poster board or construction paper. These will be mounted and shown off! (i am very proud of you guys).
Use a chemistry book, encyclopedia, or internet for reference...
Split the work up between you, and hand in 1 timeline per group.
Best of luck!
Atomic Structure Info: dbhs.wvusd.k12.ca.us/Atomic Structure/AtomicStructure.html (This site has information about Dalton, Moseley, and Rutherford.)
A look inside the atom: www.aip.org/history/electron (This site contains information about Thomson and the discovery of the electron.)
Images of Chemists and Equipment: dbhs.wvusd.k12.ca.us/gallery/gallerymenu.html
History of the Atom: members.tripod.com/~mrbeens/atom.html (This site has information about the various atomic models and pictures of those models.
Atomic Structure Timeline: www.watertown.k12.wi.us/hs/teachers/buescher/atomtime.asp
This site contains a timeline with a brief summary of key developments and scientific discoveries related to the atom.
Google Image Search: www.google.com/imghp?hl=en (At this site you can search by name for pictures of all of the scientists, models, and experiments.
www.atomicmuseum.com - a great little site!
www.chemsoc.org - another fine site