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Edible Ink


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Edible Ink

In this chemistry activity (page 6 of the PDF), learners observe a chemical change. Learners write and reveal a secret message using edible ink. Learners use their critical thinking skills to figure out why heat and time reveal the message. Though this activity is included as a pre-visit activity for a workshop about physical and chemical changes, it also is an excellent stand-alone activity.

Quick Guide


Preparation Time:
5 to 10 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
$5 - $10 per group of students

Age Range:
Ages 8 - 14

Resource Types:
Activity, Experiment/Lab Activity

Language:
English

Materials List (per group of students)


  • small containers
  • lemon, orange or grapefruit juice, milk, baking soda or sugar solution
  • cotton Swabs
  • paper
  • electric iron, hair dryer or some other heat source (NOT an open flame)
  • cloth towels
  • plastic tray

Subjects


  • Physical Sciences
    • Heat and Thermodynamics
      • Heat and Temperature
    • Chemistry
      • Chemical Reactions
      • Solutions

Informal Categories


  • Crime Science
  • Food and Cooking

Audience


To use this activity, learners need to:

  • see
  • see color
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Includes alignment to state and/or national standards

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Access Rights:

  • Free access

By:

Rights:

  • All Rights Reserved, COSI Columbus, ©2009

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