Bubble Suspension

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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice. Learners will be amazed as the bubbles hover on the denser layer of carbon dioxide gas, then begin to expand and sink before freezing on the dry ice. Use this activity to discuss sublimation, density, and osmosis as well as principles of buoyancy, semipermeability, and interference.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
10 to 30 minutes
Estimated Materials Cost:
$1 - $5 per group of students
Age Range:
Ages 6 - 14
Resource Types:
Activity, Demonstration
Language:
English

Materials List (per group of students)

  • A small aquarium
  • Dry ice
  • Bubble solution
  • Gloves
  • Adult help

Keywords

Subjects

  • Earth and Space Science
    • Earth Structure
      • Atmosphere
  • Physical Sciences
    • States of Matter
      • Solids
      • Gases
      • Changes of Phase
    • Structure and Properties of Matter
      • Volume and Density
    • Vibration and Waves
      • Diffraction and Interference
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Informal Categories

  • Toys

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

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