Key term for OCR GCSE Chemistry A, used in Practical Activity Groups.
An indicator that is colourless in acidic solutions and pink in alkaline solutions.
Phenolphthalein appears in OCR GCSE Chemistry A revision content for Practical skills, especially Practical Activity Groups and Titration Practical.
Practical skills
Practical Activity Groups • Titration Practical
Practical skills
Practical Activity Groups • Identification of Species Practical
Global challenges
Improving processes and products • Corrosion Mitigation
Global challenges
Improving processes and products • Fertiliser Production Comparison
Monitoring and controlling chemical reactions
Monitoring chemical reactions • Titration Techniques
Chemical reactions
Types of chemical reactions • Hydrogen Ions and pH
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