Key term for OCR GCSE Chemistry B, used in Useful acid products.
A mixture of dyes that provides an approximate pH value via a range of colour changes.
Universal Indicator appears in OCR GCSE Chemistry B revision content for Making useful chemicals, especially Useful acid products and Neutrality and acidity.
Making useful chemicals
Useful acid products • Neutrality and acidity
Practical skills
Production of salts • Apparatus and techniques
Making useful chemicals
Useful acid products • pH scale
Chemical patterns
The Periodic Table and elements • Identifying Group 1 reactivity
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