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  Earth Science
  Life Science
  Physical Science

Hands-on Activity

By All Indications

Fun Forces
In this activity, students create an acid-base indicator using red cabbage extract. Students then use this indicator to create a scale using liquids of known acidity. Finally, students use this scale to identify the acidity of unknown liquids.
Topic: Acid/Base Indicators
Real World Science Topics:
  • An exploration of what acids and bases are.
  • An exploration of how to create an indicator that can be used to differentiate between acids and bases.
  • An exploration of the acidity of various household substances.
Students will gain an understanding of techniques for measuring acidity, as well as using known standards to measure the properties of unknown solutions.

Activity Difficulty Rating: 5 Each hands-on science activity has been ranked based on difficulty of set up and how difficult they are to perform. The rating scale is from 1 to 5, with 1 being the easiest and 5 being the most complicated.



Use these quick refreshers to prep for your next class.