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a bond formed when non-metal atoms share a pair of valence electrons to form a molecule.
matter cannot be created or destroyed in a chemical reaction.
a very reactive atom or group of atoms with an unpaired valence electron.
two species that differ from each other by a single proton (H+ ion). An acid becomes its...
a reaction that takes place automatically by itself, without requiring extra stimulation.
a chemical reaction in which a substance reacts to form two or more simpler substances.