1. History of Atomic Theory A collaborative effort

2. Atomic Models This model of the atom may look familiar to you. This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in different energy levels. – A model uses familiar ideas to explain unfamiliar facts observed in nature. A model can be changed as new information is collected.

3. The atomic model has changed throughout the centuries, starting in 400 BC, when it looked like a billiard ball →

4. Group Assignments Group 1: Democritus Group 2: John Dalton Group 3: JJ Thomson Group 4: Ernest Rutherford Group 5: Neils Bohr Group 6: James Chadwick Group 7: Modern Atomic Theory

5. Your research WHEN: Year of Discovery (when did this all take place) WHO: Researcher name WHAT: Significant Contribution – What did they discover – How did they come about the discovery (What was discovered should be described in 7 words or less) PICTURE OF WHAT THE ATOM LOOKS LIKE (Paper is for PICTURE ONLY – i.e. use the whole paper for your drawing)