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Salivary Amylase and Starch Digestion
- The ability of the enzyme
amylase, found in human saliva, to hydrolyze or break down
starch molecules will be studied in various pH solutions.
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The Cat's Meow
- Food coloring is placed in milk,
then detergent is added to illustrate the dramatic interactions
between molecules at the surface of a liquid.
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Experiment: The System
- An open-ended experiment where
students use the scientific method to determine the behavior of
the methylene blue bottle reaction.
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Comparison of the Effects of Inorganic Catalysts and Enzymes on
Peroxide Decomposition
- This experiment compares
inorganic catalysts and enzymes in terms of their effect on the
decomposition of hydrogen peroxide.
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Demonstration: The Photochemical Reduction of Thionine
- The color of a solution of
thionine turns from purple to colorless within a few seconds
when exposed to bright light. The purple color is restored when
the light source is removed. By adding various reactants to this
complex, redox equilibrium, the rates at which the color changes
occur can be studied.
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Demonstration: Gummy Bear Sacrifice
- This demonstration illustrates
the vast amount of energy which is available from the oxidation
of carbohydrates, such as sugar. An excess of oxygen, generated
by the decomposition of sodium chlorate, will react with a gummy
bear, releasing a large amount of energy quickly and
dramatically.
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Experiment: Heat Content of Snack Foods
- In this experiment, the student
will burn several types of nuts and snack foods in order to
determine their heat content per gram.
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Experiment: Solubility and the Percent of Oil in Peanuts
- In this experiment, the student
will determine the solubility of a variety of solutes in several
solvents. The observed solubility will be related to the
structure and intermolecular forces of both the solute and
solvent. On the basis of these tests, they will then devise and
carry out an experimental method for the determination of the
percent oil in peanuts.
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