Soap Films and Bubbles
SCIENCE ACTIVITY BOOKS
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Recommended grade level:
7-8+.
The 28 easy-to-follow activities in Solutions--which is one of many units in the Task Card Series--constitute a minioverview of the chemistry of solutions, including the subjects of solvents, solutes, dissolving, filtering, and purifying processes. For example, students compare and contrast a coarse suspension, colloidal dispersion, and a true solution. They clear a mixture of soil and water by settling and filtration so that they can observe how soil particles tend to sort by size. They build a simple solar distillation apparatus that will purify a true solution. They also discover how temperature influences the rate of dissolving, analyze various sources of drinking water for the presence of dissolved minerals, read and interpret a solubility graph, and find out that the solubility of some solutes in water decreases with increasing temperature.
The activities in Solutions require readily available materials (such as rice, sugar cubes, and plastic straws). Certain activities can be omitted or sequences changed to meet specific class needs. The unit contains reproducible "task cards" that include directions for each activity, teaching notes, and review questions.
Price:
$13 (ISBN 0-941008-82-7).
Publisher/supplier:
TOPS Learning Systems.
Materials:
Available locally, or from commercial suppliers.
