Cauldron Bubbles

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In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt. Learners can experiment using other materials like sugar and sand. [Activity is publicly available through a web crawler capture on Archive.org.]

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
5 to 10 minutes
Estimated Materials Cost:
$1 - $5 per student
Age Range:
Ages 6 - 11
Resource Types:
Activity, Experiment/Lab Activity
Language:
English, Spanish

Materials List (per student)

  • large clear drinking glass
  • water
  • vegetable oil
  • about 4 tablespoons of salt
  • sugar (optional)
  • sand (optional)

Keywords

Subjects

  • Physical Sciences
    • Chemistry
      • Solutions
    • Structure and Properties of Matter
      • Volume and Density
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations
      • Communicating Results

Informal Categories

  • Food and Cooking

Audience

To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

Foreign language versions of this resource:

This resource is part of:

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, WGBH Educational Foundation, 2003

Funding Sources:

  • National Science Foundation, 0229796
  • Corporation for Public Broadcasting
  • The Arthur Vining Davis Foundation
  • PBS