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 molecules change their configuration by exchanging atoms.  It can also involve the collision of individual atoms.  A chemical reaction has two types,  [[endothermic]], requiring a net input of kinetic energy to complete the reaction, and [[exothermic]], resulting in a net output of kinetic energy in the products.

 

 

[[Category:chemistry]]

[[Category:chemistry]]