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Science Vocab

Law of Conservation of Mass Law stating that in a chemical reaction, matter is neither gained nor lost.
Physical Change A type of change in which the form of matter is altered, but one substance is not transformed into another.
Chemical Change A process in which one or more substances are changed into one or more different substances.
Element Substance that cannot be broken down into simpler substances.
Chemical Formula A combination of symbols used to express the chemical composition of a substance.
Element Molecule A group of atoms bonded together to make an element.
Compound Molecule Where two or more elements are put together.
Chemical Equation A form for writing what reactants are used and what products are formed in a chemical reaction.
Chemical Reaction Process that produces chemical change, resulting in new substances that have properties different from original substance.
Reactants (in a chemical equation) Substance that exists before a chemical reaction occurs.
Products (in a chemical equation) Substance that forms as a result of a chemical reaction.
Coefficient (in a chemical equation) The number before the variable.
Subscript (in a chemical equation) Subscripts are used in writing formulas. The subscript indicates the number of the preceding element.
Diatomic Molecule A molecule which will have two of the same element. It cannot have less than or more than two of the same element.
Created by: 1221523977