Chemical Breath

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This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance. They also see physical evidence of the carbon dioxide in their breath by making water change color simply by blowing through a straw into it. Though included as a previsit activity for a traveling science show, it also makes an excellent stand alone activity.

Quick Guide

Preparation Time:
4 to 24 hours

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
$1 - $5 per student

Age Range:
Ages 8 - 18

Resource Types:
Activity, Experiment/Lab Activity


Materials List (per student)


  • Life Sciences
    • Cells
    • Human Body
      • Respiration
  • Physical Sciences
    • Chemistry
      • Chemical Reactions
      • Acids and Bases
      • Solutions
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations


To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Includes alignment to state and/or national standards:

This resource is part of:

Access Rights:

  • Free access



  • All rights reserved, COSI Columbus, 2009