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science vocab 2

TermDefinition
Atom the smallest unit of an element that keeps the element's properties
Molecule Two or more of the same elements chemically bonded (or more than one of the same molecule chemically bonded together)
compound Two or more DIFFERENT elements bonded together
element a pure substance that cannot be broken down into simpler substances by chemical means, and it is made of only one type of atom
reactant the starting materials in a chemical reaction
product the new substances formed after the reaction occurs
physical change alters a substance's appearance, shape, or state but doesn't change its chemical makeup; no new substance is formed
Chemical Reaction (chemical change) a process in which one or more substances, the reactants, are converted to one or more different substances, the products
Law of Conservation of Mass in a closed system, mass is neither created nor destroyed during a chemical or physical reaction
Law of Conservation of Atoms atoms are neither created nor destroyed in a chemical reaction; they are simply rearranged
Chemical Bond the force that holds atoms together to form molecules and compounds
Created by: user-1972513
 



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