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Cloudy Globs: Can You Make a White Gel From Two Clear Liquids?


Source Institutions

    Oregon Museum of Science and Industry

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Cloudy Globs: Can You Make a White Gel From Two Clear Liquids?

Using household materials, learners can make white gooey globs from clear solutions. Alum, dissolved in water, reacts with the hydroxide in ammonia to create aluminum hydroxide. This creates a soft, cloudy gel. This activity, located on page 2 of the PDF, is one of three activities in the Take Home guide for the Chemical Reactions unit in OMSI's Chemistry Lab. Also included on the PDF are two additional activities: Gas Production and Glow Fast, Glow Slow.

Quick Guide


Preparation Time:
Under 5 minutes

Learning Time:
5 to 10 minutes

Estimated Materials Cost:
1 cent - $1 per student

Age Range:
Ages 8 - 14

Resource Types:
Activity, Experiment/Lab Activity

Language:
English

Materials List (per student)


  • two small jars or glasses (about 4-oz)
  • warm water
  • alum (in the spice aisle at grocery stores)
  • 1/2 teaspoon measure
  • 1 teaspoon measure
  • ammonia

Subjects


  • Physical Sciences
    • Chemistry
      • Chemical Reactions
      • Solutions
    • States of Matter
      • Solids
      • Liquids

Audience


To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


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

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