Universal Indicator Rainbow Trout

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In this activity on page 2 of the PDF, learners discover how color changes can help scientists distinguish between acids and bases. Learners create colorful rainbow trout artwork using universal indicator solution and various household liquids. Safety note: learners must wear safety goggles.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
10 to 30 minutes
Estimated Materials Cost:
$10 - $20 per student
Age Range:
Ages 6 - 11
Resource Type:
Activity
Language:
English

Materials List (per student)

  • Universal indicator solution (available from chemical supply houses)
  • Lemon juice
  • Liquid laundry detergent
  • Index card or piece of acid-free cardstock with non-shiny finish
  • Rainbow trout pattern
  • Paintbrush
  • Cotton swabs
  • Water
  • 3 small plastic cups
  • Paper towels
  • Pencil, pen
  • Scissors
  • Teaspoon
  • Chemical safety goggles

Keywords

Subjects

  • Physical Sciences
    • Chemistry
      • Chemical Reactions
      • Acids and Bases
      • Solutions
    • Vibration and Waves
      • Light and Optics
    • Light and Optics
      • Sunlight and Color
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Informal Categories

  • Animals
  • Arts and Crafts
  • Food and Cooking

Audience

To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Links STEM to other topics of interest such as arts and humanities
  • Involves hands-on or lab activities

Other

Access Rights:

  • Free access

By:

  • Office of Community Activities, American Chemical Society

Rights:

  • All rights reserved, American Chemical Society, 2001