They might show up as slightly acidic or slightly alkaline because of this. The pH scale measures how strongly acidic or alkaline a solution is using a set of values from pH 0 to pH 14.

Some people like to start their day with a cup of coffee; others prefer brewing a cup of tea. But which of these two ...

Museum palaeontologist Prof Richard Twitchett explains, 'Ocean acidification is a change in the pH of seawater, which is normally around neutral'. The pH scale measures a substance's acidity or ...