3. Acids and bases – 3.1 Indicators to test acids and bases (alkalis) (teacher instructions)
Background information on the content and practical information on conducting the “Indicators to test acids and bases" experiment.
We can refer to natural and artificial dyes as “sensors” for acids and bases.
By the way, base is the general term whereas alkalis (they contain alkali metals) are a subset of basic substances.
One item deals with „Technical application and vocational orientation“.