1. Chemistry Toombs County High School 2.  The lab technician shown here is using a magnifying lens to examine a bacterial culture in a petri dish. When scientists cannot…

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1. Investigating Atoms and Atomic Theory  Students should be able to:  Describe the particle theory of matter.  Use the Bohr model to differentiate among the three…

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Slide 1 Slide 2 Models or Theories Allow scientists to communicate their ideas to others. A model should be able to explain previous observations and predict future outcomes.…

Slide 1 Slide 2 Atomic Theory Chapter 8 The Composition of the atom Slide 3 John Dalton 1800 -Dalton proposed a modern atomic model based on experimentation not on pure reason.…

1.Chapter 3 Elements, Atoms, and Ions2.   3. Alchemy- pseudoscience based upon the belief that cheap metal could be turned into gold Greek philosopher Aristotle proposed…