CH204Lecture2Notes - Dr. Andersons Favorite Uses for Diet...

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1 Dr. Anderson’s Favorite Uses for Diet Coke 1. Density Experiments 2. Diet Coke + Mentos Sticky Fun! http://www.eepybird.com/ CH204 Experiment 2 Dr. Brian Anderson Spring 2009 Experiment 1 Post­Game Show pipette and burette intensive and extensive properties interpolation determining random experimental error What about gross error and systematic error?
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2 Experiment 1 Post­Game Show continued. .. Another question: Isn’t there some error in the density we determined in Part 2? We going to Jamaica, mon! Separate a mixture of salt, sand, and chalk dust based on differences in their physical and chemical properties. Add water to dissolve NaCl. Add acid to dissolve CaCO 3 . SiO 2 is left behind in the beaker. Experiment 2 Overview Characteristics of a material that do not involve changing the chemical formula of the compound. Examples include: When a compound changes state (solid, liquid, gas, aqueous), it is still the same compound, so that’s a physical change, not a chemical change. Physical properties Boiling point Melting point Solubility Density Physical state Particle size Color Shape
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3 Characteristics of a material that DO require changing the chemical formula of the compound. This means reactivity with another chemical. Examples: Flammability
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CH204Lecture2Notes - Dr. Andersons Favorite Uses for Diet...

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