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.

Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale goes from 0 to 14 with pH 7 as the neutral point. As the amount of hydrogen ions in the soil increases the ...

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 ...

In the 21st century, the Earth's oceans are growing warmer and more acidic. This change is happening slowly over the ...