This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American I remember learning about acids and bases (or ...

The pH scale measures the acidity or alkalinity of a substance, ranging from 0 to 14, with values below 7 representing acidity, above 7 representing alkalinity, and 7 representing neutrality.

In this episode, Dr Sunayana Bhargava and Tulela Pea define acids, alkalis and the pH scale. They look at the difference between strong, weak, concentrated and dilute acids. Suitable for: AQA, Edexcel ...

Medically reviewed by Sohaib Imtiaz, MD If you have acid reflux or its chronic form, gastrointestinal reflux disease (GERD), ...