大象传媒

  • Acids, bases and salts

    • pH scale and indicators

      Many chemicals can be classified as being acidic, 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 carbonates to produce salts. Neutralisation is the reaction between an acid and a base.

    • Titration and calculations

      Titration is a method used to prepare salts if the reactants are soluble. Concentration and volumes of reactants can be calculated from titrations.

Links