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This is a chemistry lab activity about solutions (page 6 of the PDF). Students make a limewater testing solution for carbon dioxide and explore the concepts of solubility and precipitates. The limewater they make can be used in a separate activity (page 7 of the PDF). Though included as a previsit activity for traveling science show, it also makes an excellent stand alone activity.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
4 to 24 hours

Estimated Materials Cost:
$10 - $20 per group of students

Age Range:
Ages 6 - 14

Resource Types:
Activity, Experiment/Lab Activity


Materials List (per group of students)

  • Lime (used in making pickles)
  • Tablespoon
  • Water
  • 2 glass quart jars with lids


  • Physical Sciences
    • Chemistry
      • 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