What is another word for conservation of matter?
Pronunciation: [kˌɒnsəvˈe͡ɪʃən ɒv mˈatə] (IPA) 
The conservation of matter is a principle in physics that states that the total amount of matter in a closed system remains constant over time, unless it is influenced by an external force. Synonyms for this concept include the law of conservation of mass, the law of mass conservation, and the principle of mass conservation. These terms all refer to the same basic idea, and are used interchangeably in scientific literature. Other related terms may include the law of continuity, which states that matter cannot be created or destroyed, only transformed from one form to another, and the principle of conservation of energy, which similarly states that energy cannot be created or destroyed, only transformed.
