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STC Unit Descriptions
Chemical Tests
ISBN 0-89278-969-7
Subject: Basic chemistry concepts
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Materials included in the Chemical Tests unit kit.
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This unit introduces students to the science
of chemistry by challenging them to explore and determine the identity of five
common household chemicals: sugar, alum, talc, baking soda, and cornstarch.
Students begin by focusing on the physical properties of color, form, and
texture. Next, they explore chemical properties by observing how the five
powders interact with water, vinegar, iodine, and red cabbage juice. These tests
enable them to explore phenomena such as crystallization and to observe the
processes of evaporation and filtration. Finally, students apply their skills
and their knowledge of the five chemicals to identify a variety of “mystery”
mixtures. As a result of conducting these investigations, students develop
scientific skills such as observing and recording results, forming conclusions
on the basis of experience, communicating results, and applying their knowledge
to solve problems.
Video download:
Chemical Tests
(Real Video™ or
QuickTime™)
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