Science Focus - the home of BBC Science Focus Magazine
How does acidity work? © Getty Images

How does acidity work?

Published: 02nd August, 2017 at 14:00
Subscribe to BBC Science Focus Magazine and get 6 issues for just £9.99

The pH scale measures acidity in alkalines and acids.

Acids are molecules that easily become negatively charged. Most acids do this by losing a proton. The stronger an acid is, the more easily it gives up a proton (hydrogen ion). Acidity is measured using the pH scale, which stands for ‘potential for hydrogen’. Each step down in the pH scale represents 10 times more hydrogen ions released. So a pH 1 acid is 100,000 times more reactive than a pH 6 acid.

Advertisement
© Raja Lockey
© Raja Lockey
Advertisement
Advertisement
Advertisement

Sponsored content