Thermal Decomposition - GCSE Chemistry Definition

Thermal decomposition is a chemical reaction where a single substance breaks down into two or more simpler substances when it is heated. This process usually requires high temperatures to provide enough energy for the bonds in the compound to break. An example of thermal decomposition is when calcium carbonate, found in limestone, is heated to produce calcium oxide and carbon dioxide gas. This type of reaction is important in various industries, such as making cement from limestone. Understanding thermal decomposition helps students grasp how heat can cause chemical changes in materials, a key concept in GCSE Chemistry.