Chemistry Notes

Chemistry Notes - Chemistry Notes Jan 9 2008 Scientific...

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Chemistry Notes Jan. 9, 2008 Scientific Method 1. Observation (what?!) 2. Hypothesis (possible why?) 3. Experimentation (prove it) 4. Theory (real why?) Jan 14 1. Classification of matter based on phase: a. Liquid: water i. Liquid to gas: boiling/evaporation ii. Gas to liquid: Condensation b. Solid: ice i. Liquid to solid: freezing ii. Solid to melting: melting c. Gas: steam i. Solid to gas: sublimation ii. Gas to solid: deposition 2. Classification of Reaction a. Physical: H2O will still be H2O b. Chemical: H H H O H- C- C- C- H becomes = C + HOH H H H O Class Examples: 1. Sodium Hydroxide: Physical reaction, absorbs water from the oxygen. Na OH (15 minutes pass). .hygroscopic (likes to absorbs water) 2. Magnesium strips: start with magnesium solid, add flame and it becomes magnesium oxide. 3. Dry Ice: CO2 going from solid to gas. (sublimation). 4. Sodium Hydroxide + CO2= NAOH is a solid, CO2 is a gas. Feb. 25
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This note was uploaded on 04/07/2008 for the course COMM 101 taught by Professor Spencer during the Spring '08 term at Westmont.

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Chemistry Notes - Chemistry Notes Jan 9 2008 Scientific...

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