a change that produces one or more new substances with new chemicals propertes.

a chemical change in which elements are combined or rearranged

a change in which the appearance(physical properties) of a substance changes but its a chemical propertiesstay the same

a combination of substances in which no reaction takes place

tells the kinds of atoms and how many of each kind are in a compound

the substance that is dissolved in a solution

a number in formula that tells the number of atoms an element in a compound

to break apart

one of the spaces around the nucleus of an atom in which an eletron moves