Changes

A '''chemical reaction''' is a process in which one or more chemical substances change their configuration by exchanging [[atom|atoms]] or [[electron|electrons]].  Chemical reactions are either [[endothermic]], requiring a net input of [[thermal energy]] to complete the reaction, or [[exothermic]], resulting in a net output of thermal energy in the products.

A '''chemical reaction''' is a process in which one or more chemical substances change their configuration by exchanging [[atom]]s or [[electron]]s.  Chemical reactions are either [[endothermic]], requiring a net input of [[thermal energy]] to complete the reaction, or [[exothermic]], resulting in a net output of thermal energy in the products.

==See Also==

==See Also==