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science vocab

vocab for science

Law of Conservation of Mass a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system.
Physical Change A physical change is 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 A chemical element is a substance that cannot be broken down by chemical means
Chemical Formula A representation of a substance using symbols for its constituent elements
Element (Diatomic) Molecule molecules composed only of two atoms, of either the same or different chemical elements
Compound Molecule a compound regarded as a union of molecules retaining their identities
Chemical Equation a representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product
Chemical Reaction A process in which one or more substances (reactants) are chemically changed into one or more new substances (products)
Reactants (in a Chemical Equation) Any substance that undergoes a chemical change in a givin reaction
Products (in a Chemical Equation) a substance that is formed as the result of a chemical reaction
Coefficient (in a Chemical Equation) The number immediately preceding the compound
Subscript (in a Chemical Equation) numbers used to tell you how many atoms of an element are present in the equation
Iconic Compound A chemical compound in which ions are held together in a lattice structure by ionic bonds
Covalent Compound A form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms
Metallic Compound a compound that contains one or more metal elements
Synthesis The production of chemical compounds by reaction from similar materials
Decomposition The state or process of rotting
Single Replacement A chemical reaction in which an element replaces one element in a compound
Double Replacement A chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions
Created by: s0404095