Making a pH indicator using red cabbage

In association with

A close-up photograph of a heap of red cabbages

Source: © Shutterstock

Try this class practical to make a pH indicator from red cabbage with your students. Includes kit list and safety instructions.

A pH indicator is a substance which has one colour when added to an acidic solution and a different colour when added to an alkaline solution. Many plant colouring materials in berries, leaves and petals act as indicators.

Make your lessons pop

Choose an account option to continue exploring our full range of articles and teaching resources

Register for a personal account

Free

Free access for everyone, everywhere. If you only need a few resources, start here.

What's included

  • One free teaching resource each month
  • Five free Education in Chemistry articles each month
  • Personalised email alerts and bookmarks
Register now
UK and Ireland only

Join Teach Chemistry

Free for eligible users

Free and comprehensive access for teachers and technicians at secondary schools, colleges and teacher training institutions in the UK and Ireland.

What's included

  • Unlimited access to our resources and practical videos
  • Unlimited access to Education in Chemistry articles
  • Access to our online assessments
  • Our teacher well-being toolkit and personal development resources
  • Applications for funding to support your lessons
Sign up now

Subscribe for extended access

£80 per year

Get unlimited articles and resources each month, plus discounts on professional development courses.

What's included

  • Unlimited access to our resources and practical videos
  • Unlimited access to Education in Chemistry articles
  • 10% off our self-led professional development courses
Subscribe now

Already have an account? Sign in now.