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science 1 dethloff


law of conservation of mass The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions
physical change Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance.
chemical change During a chemical change, substances are changed into different substances.
element In chemistry, an element is a pure substance that cannot be broken down into any simpler substances by chemical methods.
chemical formula A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound.
element (diatomic) molecule diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements.
compound molocule A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds
chemical equation A chemical equation is the 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 chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
reactants (chemical equation) A substance participating in a chemical reaction, especially a directly reacting substance present at the initiation of the reaction.
products (chemical change) A product is a substance that is formed as the result of a chemical reaction.
coefficient (chemical change) a coefficient is a multiplicative factor in some term of an expression (or of a series); it is usually a number, but in any case does not involve any variables of the expression.
subscript (chemical change) A subscript or superscript is 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: e0406483