Final answer:
The principle stating that matter is not created or destroyed in any chemical or physical change is known as the Law of Conservation of Mass.
Step-by-step explanation:
The fact that matter is not created or destroyed in any chemical or physical change is called the Law of Conservation of Mass. This fundamental principle of chemistry states that during a chemical reaction, the mass of a closed system of substances will remain constant, no matter what processes are occurring inside the system. For example, when brewing beer, even though the ingredients transform into beer with different properties, there is no loss in the total mass of the substances involved. Similarly, in a lead-acid car battery, during the production of electricity, the substances are transformed, yet the total mass remains unchanged. Matter can change form, such as from solid to liquid to gas, but it cannot be created or destroyed.