However, water comes from different sources, like tap water or river water. These water samples have other substances dissolved in them. They might show up as slightly acidic or slightly alkaline ...

Discover how red cabbage can act as a natural pH indicator, revealing whether substances are acids or bases through beautiful color changes. pH is a measure that tells us how acidic or basic a ...

As part of the school’s program of academic enrichment, pupils from year 9 and year 10 joined forces to create a giant pH-indicator chart. Working in pairs, each pair made a different indicator from ...