BIG IDEA So what ARE atoms, anyway? How do we know?
1. Warm-up: name a halogen, noble gas, where are the gases, how many liquids are there, name an alkali earth metal.
2. Complete worksheet, "Pudding and Clouds," pgs. 42-44 in textbook.
3. Debrief activity, "Pudding and Clouds."
4. Review sheet and reading, with questions, "Pudding and Clouds.
5. Discussion of how the models were discovered, and the role of experiments in changing the model of an atom.
Homework: 1) pgs. 44-45, text; 2) PT worksheet 2
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