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A Very Merry Indicator

firewatch

DC11062

Price: FREE

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The bright red bracts of the poinsettia are not only a wintry pleasure but a great option to use as a natural indicator. In this activity, students extract the pigment from the poinsettia and use it as an indicator to identify the pH of unknowns.

Concepts

  • Acids & Bases
  • pH
  • Indicators