Question

In order to initiate combustion in solids materials, it is usually necessary to raise their temperature by means of an external heat source. Under certain conditions however some materials may generate the necessary heat internally. Give two examples of materials that can exhibit this phenomenon. In each case state how internal heating arises outline the precautions that should be taken when they are stored to prevent combustion occurring

a.List other chemical reactions that can result in heat being produced to such an extent that ignition may occur

b. A fire quiet often follows a change to an industrial process. Give an example of such a change that could result in self heating occurring