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Flinn Lab Activities and Demonstrations
1-800-452-1261
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General, Organic and Biological Chemistry Kits,
continued
Properties of Biological Buffers—Laboratory Kit
By: The Flinn Staff
Many chemical reactions in living organisms take place at neutral pH values. How do cells maintain the delicate pH balance required for life and health? Buffers! A buffer protects against rapid changes in pH when acids or bases are added to it. All living cells contain a natural buffer system to maintain the constant pH needed for proper cell function. Students will learn all about how buffers work by examining a model carbonate blood buffer and phosphate cell buffers.
Complete for 24 students working in pairs.
Properties of Nuclear Radiation—Laboratory Kit
By: The Flinn Staff
Nuclear radiation is potentially harmful to living organisms. Despite its potential danger, nuclear radiation has been harnessed for many benefi- cial purposes, including nuclear medicine and nuclear energy. How do workers in hospitals and nuclear power plants protect themselves from the harmful effects of nuclear radiation?
In this experiment, students compare the properties of alpha, beta and gamma radiation. The activity (counts per minute) of low-level alpha, beta and gamma sources are measured using a Geiger-Müller radia- tion detector, which “counts” the number of atoms ionized by nuclear radiation. Students investigate the relative penetrating power of alpha, beta and gamma radiation by measuring how the recorded activity changes when they place different materials between the source and the detector. The effectiveness of different shielding materials will also be determined.
Complete for 24 students working in groups of three. Radioactive sources and measuring equipment are required and available separately.
Models of Organic Compounds—Laboratory Kit
By: The Flinn Staff
There are more than nine million organic compounds! What factors are responsible for this tremendous number? What makes all of these compounds different? Students build organic molecules using models to understand the basic structure of organic compounds. Once constructed, students use the models to draw structural formulas of organic compounds, determine the general formulas for different classes of hydrocarbons, and develop the concept of isomers of organic compounds.
Complete for six student groups.
Digestive Enzymes—Laboratory Kit
By: The Flinn Staff
Organisms that do not make their own food must break down large molecules to generate the “building blocks of life.” Investigate the properties of digestive enzymes that break down plant and animal tissue—food—into glucose, amino acids and fatty acids needed for metabolism and growth. Students will investigate the actions of amylase, pepsin and lipase on proteins, starches and fats in a series of chemical tests. The results are used to determine the optimum pH condi- tions for specific enzymes.
Complete for 24 students working in pairs for Part A and groups of 4 in Part B.
Properties of Biological Buffers—Laboratory Kit AP8032
Catalog No.
Description
Price/Each
AP8032
Properties of Biological Buffers—Laboratory Kit
$47.45
Properties of Nuclear Radiation—Laboratory Kit AP8033
Catalog No.
Description
Price/Each
AP8033
Properties of Nuclear Radiation—Laboratory Kit
$ 61.55
TC1564
Radiation Monitor
181.85
AP8796
Radioactive Source Kit, Set of 3
313.60
Models of Organic Compounds—Laboratory Kit AP8034
Catalog No.
Description
Price/Each
AP8034
Models of Organic Compounds—Laboratory Kit
$152.80
Catalog No.
Description
Price/Each
AP8035
Digestive Enzymes—Laboratory Kit
$80.45
GENERAL, ORGANIC AND BIOLOGICAL CHEMISTRY continued on next page.
Digestive Enzymes—Laboratory Kit AP8035