The History of the Atom Project DUE NEXT FRIDAY (10/13) THAT IS WHEN YOU WILL PRESENT YOUR FINDINGS
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1 Name: Period: Date The History of the Atom Project DUE NEXT FRIDAY (10/13) THAT IS WHEN YOU WILL PRESENT YOUR FINDINGS A Cooperative Learning Activity In this jigsaw activity, each member of the team is responsible for a specific part of the activity. As experts you must be able to teach your part to your group. With that goal in mind, members of each base group leave and form expert teams by topic, e.g. Dalton s Model. In your expert teams, you must master the material and decide how best to teach it to the members of your base group. Maybe that s a Powerpoint, a Piktochart, a Prezi, or a physical poster (or another approved method). Finally, as experts on FRIDAY, you return to your base groups and take turns using your expertise to teach each other about your topic. Everyone will then (at the end) create a timeline in their notebook including all of the scientists containing the information required. Requirements are listed below. The Activity Objective: As a group, identify and illustrate the historical developments in our understanding of the structure of an atom from ancient Greece through modern times. 1. Break up into expert groups by topics. The scientists/ topics are: a. Aristotle, Dalton and Democritus b. JJ Thomson & Robert Millikan c. Ernest Rutherford & James Chadwick d. Niels Bohr & Erwin Schrödinger 2. Begin collecting information about your topic using the internet (at least 2 sources beyond Wikipedia). Cite sources. 3. RESEARCH. Use the following questions and directives as a guideline for gathering information. Do not limit your information to just these questions. a. What time period does your topic cover? b. Describe the experiments that they performed. c. What special equipment did the scientists use to develop and support their model? d. What was the major discovery that led to the development of this model? (Hint: look at your answers to question C above and think. The answer lies in the equipment design and what is needed to operate it). e. Draw an illustration of the model of that atom. 4. Take notes on the material you read. 5. Record EVERYTHING in your notebook 6. COLLABORATE. As an expert group, determine what information you feel is most important to teach to your individual base groups. Go over your questions above and the questions below that pertain to each model to the remainder of your group.
2 7. TEACH. At the end of the allotted time, return to your base group and use your expertise to teach the development of your model of the atom to your group members. In addition, with your group, draw a timeline of the history of the development of the atom. Each student should have a timeline for their own notes. Be certain your timeline includes what discovery or technology facilitated the development of each of the five models and why each of the models had to be changed. I. In expert groups: answer only the following questions that apply to your topic a. Aristotle, Dalton and Democritus 1. What did Democritus say about the atom? 2. What did Aristotle believe about the atom? 3. Why was Aristotle considered correct over Democritus based on their time period? 4. Explain the parts of Dalton s Atomic Theory. 5. What was significant about Dalton s Atomic Theory as opposed to what Democritus or Aristotle supported? Include a drawing. 6. Which portions of Dalton s Atomic Theory are still considered correct? b. JJ Thomson & Millikan 1. What are cathode rays? 2. Describe JJ Thomson s Cathode Ray Experiment. Include a drawing. 3. What particle did Thomson discover? 4. Describe Thomson s Plum Pudding model of the atom. Include a drawing. 5. Describe Robert Millikan s Oil Drop Experiment. 6. What did Robert Millikan discover about the electron? c. Rutherford and Chadwick 1. Which subatomic particle did James Chadwick discover? 2. How did he discover this? Describe the procedure, the experiment, and the findings. 3. Describe Ernest Rutherford s Gold Foil Experiment. Include a drawing. 4. Describe Rutherford s model of the atom. Include a drawing. d. Bohr & Schrödinger 1. Describe Bohr s model of the atom. 2. Explain why Bohr s model of the atoms is sometimes called the planetary model. 3. Explain why electrons orbit around the nucleus. Include a drawing 4. Describe Schrödinger s model of the atom. 5. How did he come to this conclusion of the atom? Experiment? Procedure? Calculations? II. Requirements a. You may select one of the 4 presentation methods listed. If you would like another, ask Mr. Dorsey for his approval. b. Picture(s) of the person(s) c. Date of the scientific contribution d. Image of any equipment or apparatus used/invented e. Model of the atom, based on the scientist/philosopher s theory f. Description of the experiment how it worked, the setup, and how the results contributed to the current theory of the atom. g. What was the ultimate result of the experiment?
3 Atomic Theory Name: The History of the Atom - Student Worksheet Directions: each student in the group will answer the questions below in their own words and in complete sentences. 1. What did Democritus say about the atom? 2. What did Aristotle believe about the atom? 3. Why was Aristotle considered correct over Democritus based on their time period? 4. Explain the parts of Dalton s Atomic Theory? 5. What was significant about Dalton s Atomic Theory as opposed to what Democritus or Aristotle supported? 6. Which portions of Dalton s Atomic Theory are still considered correct? 7. What are cathode rays?
4 8. Describe JJ Thomson s Cathode Ray Experiment. Include a drawing of the cathode ray experiment? 9. What particle did Thomson discover? 10. Describe Thomson s Plum Pudding model of the atom. Include a drawing 11. Describe Robert Millikan s Oil Drop Experiment 12. What did Robert Millikan discover about the electron? 13. Which subatomic particle did James Chadwick discover? 14. Describe Ernest Rutherford s Gold Foil Experiment. Include a drawing
5 15. Describe Rutherford s model of the atom. Include a drawing 16. Describe Bohr s model of the atom. Include a drawing. 17. Explain why Bohr s model of the atoms is sometimes called the planetary model 18. Explain why electrons orbit around the nucleus 19. Describe Schrödinger s model of the atom 20. How did he come to this conclusion of the atom? Experiment? Procedure? Calculations? 21. Show the progression in pictures of the models of the atom throughout history (within this project). 22. What does the atomic number mean? How do you calculate atomic mass?
6 History of the Atom Group Rubric Turn this paper in List all of the names of the people in your group a. c. b. d. Collaboration Rubric Requirement Maximum Points Points Awarded Working together in expert groups Teaching base group 10 5 Total: /15
7 Individual Rubric Research Rubric Requirement Maximum Points Points Awarded Sources 5 Notes/Discovery 5 Answered questions 5 Project Rubric (individually graded on Edmodo) Requirement Maximum Points Points Awarded Informational 5 Colorful/Creative 5 Organization of content 5 Completion of student worksheet 5 Total: /35 Grand Total: /50
8 What you re turning in As a group: 1) The paper rubric with EVERYONE S name on it As an individual (ON EDMODO): 1) Take pictures of your notes/sources in your notebook AND your student worksheet 2) Your project materials (as a pdf) To turn into Edmodo from safari or other browser on phone: i. Take pictures of stuff, then go to Edmodo ii. Click on the assignment iii. Click Attach iv. Click File from Computer v. Click Photo Library vi. Then select the photos you want.
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