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Clearing Water with Alum—Demonstration Kit

By: Dale Moss, Carrick High School, Pittsburgh, PA

Item #: AP6210 

Price: $24.77

In Stock.

Clearing Water with Alum and Water Purification Demonstration Kit for environmental science is a highly visible, commercially tested procedure that will demonstrate the water purification process.

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Product Details

Ever wonder where your drinking water comes from and how it is purified? Demonstrate to your students the water purification process using this highly visible, commercially tested procedure. Dramatic demonstration shows rapid purification of water using an alum solution. When alum solution is introduced to a water sample, sand and dirt particles coagulate and fall to the bottom of the water sample. A great demonstration to introduce your water quality unit. Kit includes extensive tips and extensions, a detailed background section and enough materials to perform the demonstration seven times.

Concepts: Precipitation, water purification.
Time Required: 25 minutes


Materials Included in Kit: 
Aluminum potassium sulfate, 200 g
Ammonia, water, 50 mL
Sand, beige, 2 lb bag

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-ESS3.C: Human Impacts on Earth Systems
HS-PS1.A: Structure and Properties of Matter
HS-PS2.B: Types of Interactions
HS-ESS3.C: Human Impacts on Earth Systems

Crosscutting Concepts

Systems and system models
Structure and function

Performance Expectations

MS-ESS3-3. Apply scientific principles to design a method for monitoring and minimizing a human impact on the environment.
MS-ESS3-4. Construct an argument supported by evidence for how increases in human population and percapita consumption of natural resources impact Earth’s systems.