Difference between revisions of "Indicator (Chemistry)"
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| − | + | ==Key Stage 3== | |
| + | ===Meaning=== | ||
| + | An '''indicator''' is a [[dye]] that changes [[colour]] depending on the [[pH]] of a [[solution]]. | ||
| + | |||
| + | ===About Indicators=== | ||
| + | : The [[colour]] of an '''indicator''' can be used to tell the [[pH]] of a [[solution]]. | ||
| + | : Different '''indicators''' will have a different range of colours for different [[pH]] values. | ||
| + | : A good '''indicator''' can be added to [[solution]] without affecting the [[pH]] of the [[solution]]. If an '''indicator''' change the [[pH]] of a [[solution]] it could not give an [[accurate]] [[reading]]. | ||
| + | |||
| + | ===Examples=== | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |+ These are the colour ranges of different '''indicator''' plants. | ||
| + | |- | ||
| + | |[[File:NaturalIndicators.png|center|600px]] | ||
| + | |- | ||
| + | |} | ||
Revision as of 08:38, 29 September 2018
Key Stage 3
Meaning
An indicator is a dye that changes colour depending on the pH of a solution.
About Indicators
- The colour of an indicator can be used to tell the pH of a solution.
- Different indicators will have a different range of colours for different pH values.
- A good indicator can be added to solution without affecting the pH of the solution. If an indicator change the pH of a solution it could not give an accurate reading.
Examples
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