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Understand factors that affect the rates of chemical reactions - temperature, concentration of reacting substances in solutions, surface area (particle size) of solids in reactions with gases and liquids, and catalysts.
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VANDERBILT STUDENT VOLUNTEERS FOR SCIENCE GTF Rates of Chemical Reactions Fall 2003 GOAL To understand factors that affect the rates of chemical reactions - temperature, concentration of reacting substances in solutions, surface area (particle size) of solids in reactions with gases and liquids, and catalysts. OUTLINE I. Introduction, p. 2 Gives overview of experiment. II. Demonstrations of Effect of Surface Area, p. 3 You give two demonstrations of the effect of surface area. A. Dust in a flame, p. 4 - Spray lycopodium powder into the flame of the tea candle. This produces a large flame because of the rapid burning of the lycopodium powder due to its small particle size and therefore its large surface area that is exposed to the oxygen in the air. B. Dust can explosion, p. 4- Spray lycopodium powder into the can where the flame of the tea candle causes the same rapid burning of the lycopodium powder you demonstrated in Part A. The large volume of combustion gases...
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