This is known as a chemical change. The other kind of change in chemistry is a physical change, which is when a substance changes without becoming a new chemical. These physical changes are often ...

It may be appropriate at this stage to compare reversible (physical) changes with irreversible ... By learning about the science of chemical reactions in food cookery he has developed unique ...

Correspondence to Dr Kirsten Corder, MRC Epidemiology Unit University of Cambridge School of Clinical Medicine Box 285, Institute of Metabolic Science Cambridge Biomedical Campus Cambridge CB2 0QQ UK; ...