This educational film explores acid-base indicators and their color changes in response to acidity. It demonstrates how substances like tea, red cabbage, and litmus paper react when acids are ...

Other indicators are strips of paper, and we can dip these into the solution. Litmus is an example of an indicator. It turns red in solutions that are acidic and it is blue in alkaline solutions.

A competition to develop computational approaches to detect ‘novelty’ in published papers will help metascientists to study how out-of-the-box research changes the scientific landscape.