Is it an acid, base, or neutral? Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties.

The liquids can be safely disposed of down the drain with plenty of water. Certain substances can help us tell whether something is an acid, a base, or neutral. Chemists call these substances ...

neutral or alkaline by using indicators. The pH scale is used to measure acidity and alkalinity. When an acid is neutralised, it forms a salt. Making salts Acids react with metals, bases and ...