Beets, and other fruits and vegetables like blackberries, plums, and blueberries are natural indicators of pH. They have a compound called anthocyanin that gives them both their pigment and this ...

If universal indicator is added to a solution it changes to a colour that shows the pH of the solution. Universal indicator is a mixture of a variety of other indicators and can be used to measure ...

However, water comes from different sources, like tap water or river water. These water samples have other substances dissolved in them. They might show up as slightly acidic or slightly alkaline ...

Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

This means the solution becomes more acidic. We can visually observe the pH of a carbonic acid solution by using a pH indicator known as bromthymol blue (BTB). BTB is green when the pH of a solution ...

pH is measured using potentiometric methods or pH indicators such as indicator solutions or strips (litmus paper). The pH meter consists of a reference electrode and a pH electrode, and the ...

Josh Smalley, a finalist on The Great British Bake Off who now runs the Science Kitchen, explains how these compounds are found in almost all fruits and vegetables and can act as pH indicators ...

Researchers from the Singapore-MIT Alliance for Research and Technology (SMART) have developed innovative sensors that can ...