Plant as pH Indicator – Differentiate Acid and Base

Plant as pH Indicator – Differentiate Acid and Base

Plant as pH Indicator – Differentiate Acid and Base

Plant as pH Indicator – Differentiate Acid and Base

Workshop Detail

  • Target Student: Standard 1 to Form 3 (7-15 years old)
  • Duration: 2 hours
  • Workshop Fees: RM 45 per participant
  • Each participant will be given a certificate of participation upon completion.
  • Each participant can bring back their own pH berry paper and red cabbage pH solution to be testing at home.

 
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When certain plants come into contact with acids or bases, their colors change! These changing plants are acid-base indicators, and they are generally alkaline or acidic, so when they come into contact with things that have a totally different pH, their colors change.

Course Outline:

  • Test for Acids and Base using flowers
  • Red Cabbage Chemistry
  • Berry pH paper

Objective

  • Identify which flower is acid-base indicator: Tulips, pansies, and roses, etc…
  • Identify why berries like blackberries, blueberries, strawberries are pH indicators.
  • Understand why the colour changed due to the soluble pigment called anthocyanin.
  • Try testing out other liquids like milk, soda, or fruit drinks to find out which ones are acidic and which ones are basic.