Comparing the Amount of Acid in Different Solutions

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In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar. By comparing the number of drops used to return each solution back to its blue color, learners can discover which solution initially contained more acid. This activity can be used as a follow-up to the activity entitled" Neutralizing Acids and Bases" from the same resource (see related resources). [Activity is publicly available through a web crawler capture on Archive.org. Activity write-up only, images are unavailable.]

Quick Guide

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

Materials List (per group of students)

  • Red cabbage indicator
  • Cream of tartar
  • Vinegar
  • Laundry detergent solution
  • 3 Clear plastic cups
  • 3 Small cups
  • 2 Droppers
  • 1 Toothpick
  • 1 Tablespoon
  • Permanent marker
  • White piece of paper
  • Student Activity Sheet

Keywords

Subjects

  • Mathematics
    • Measurement
      • Units of Measurement
  • Physical Sciences
    • Chemistry
      • Chemical Reactions
      • Acids and Bases
      • Solutions
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations
      • Gathering Data
      • Formulating Explanations

Informal Categories

  • Food and Cooking

Audience

To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

Components that are part of this resource:

This resource is part of:

Access Rights:

  • Free access

By:

  • Kessler, James H. ; Galvan, Patricia M.

Rights:

  • , American Chemical Society, 2007