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Science Lannom p.5

Physical Change a usually reversible change in the physical properties of a substance, as size or shape
Law of Conservation of Mass a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
Chemical Change a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance
Element one of a class of substances that cannot be separated into simpler substances by chemical means.
Chemical Formula a representation of a substance using symbols for its constituent elements
Element (Diatomic) Molecule Diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements.
Compound Molecule a compound made of 2 or more nonmetal elements
Chemical Equation A chemical equation is symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side.
Chemical Reaction A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
Reactants A substance that takes part in and undergoes change during a reaction
Coefficient a multiplicative factor in some term of an expression (or of a series); it is usually a number
Subscript a number, figure, symbol, or indicator that appears smaller than the normal line of type and is set slightly below or above it
Created by: kaitlyn5056