An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

How can a humble cabbage show you chemistry in action? The color changing cabbage experiment uses red cabbage juice as a pH ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

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 ...

A food with a pH below 4.6 is high in acid. This includes many citrus fruits, plums, grapes, pomegranates, and several other fruits. Tomatoes, which are technically a fruit, are also acidic. Defining ...

The pH scale is used to measure acidity and alkalinity levels. It measures the presence of positively and negatively charged hydrogen ions in a particular solution. The higher the hydrogen ions, the ...