LawConservationMass - a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system, mass - the amount of matter in an object, matter - that which has mass and occupies space, compound  - A substance made up of atoms of two or more different elements joined by chemical bonds, element - A substance made up of atoms of any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter two or more different elements joined by chemical bonds, reactant - a chemical substance that is present at the start of a chemical reaction, product - a chemical substance formed as a result of a chemical reaction, subscript - a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound, coefficient - Number placed in front of a chemical symbol to balance the equation and tells how many molecules are in the reaction, physical property - Properties of matter that can be observed such as color, size, shape, texture, odor, weight, mass, volume, density, chemical property - characteristics that can only be observed when one substance changes into a different substance,

Law of Conservation of Mass

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