C6- Acids and Alkalis

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  • Created by: kira
  • Created on: 15-06-11 11:28

Substances can be acidic, alkaline or neutral

  • There's a sliding scale from very strong acid (pH 0) to very strong alkali (pH 14).
  • Indicators and pH Meters can be used to determine pH.
  • Indicators contain a dye that changes colour depending on whether it's above or below a certain pH.
  • Universal indicator is a very useful combination of dyes, which gives the colours in the sliding scale. It is very useful on estimating the pH of a solution.
  • pH  meters can also be used to measure the pH of a substance. These usually consist of a probe, which is dipped in…


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