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Visitors separate a mixture of pebbles, salt crystals, and wood shavings by adding water and pouring the mixture through a strainer. The pebbles are left behind in the beaker; the wood shavings are caught by the strainer; and the salt (dissolved in the water) flows through. Visitors learn that they can often separate mixtures by taking advantage of the different physical properties of the components. They also learn that evaporation can be used to isolate a substance from a solution.
- 30 to 45 minutes
- Under 5 minutes
- $1 - $5 per group of students
- Ages 6 - adult
- Activity, Experiment/Lab Activity
- English
Quick Guide
Subjects
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Engineering and Technology
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Engineering
- Chemical Engineering
- Technology
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Engineering
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Physical Sciences
- Chemistry
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States of Matter
- Solids
- Liquids
- Gases
- Changes of Phase
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Structure and Properties of Matter
- Mass and Weight
- Volume and Density
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Life Sciences
- Human Body
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The Nature of Science
- Science and Society
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The Nature of Technology
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Technology and Society
- Technology and the Environment
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Technology and Society
Audience
To use this activity, learners need to:
- see
- read
Learning styles supported:
- Involves hands-on or lab activities
Other
Components that are part of this resource:
This resource is part of:
Access Rights:
- Free access
By:
Rights:
- All rights reserved, Oregon Museum of Science and Industry, 1997
Funding Source:
- National Science Foundation