what does the law of conservation of matter mean in chemistry?
law of conservation of matter - a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system. conservation of mass, conservation of matter, law of conservation of mass. conservation - (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations.
The law of conservation of matter states that matter can neither be created nor destroyed. If an environmental process is observed carefully it is able to account for the matter at any point in time. It does not mean that the form of the matter does not change, nor for that matter the properties of the matter.