what term refers to a chemical reaction that absorbs heat energy?
Its etymology stems from the Greek prefix Î­Î¾Ï (exÅ, which means outwards) and the Greek word Î¸ÎµÏÎ¼Î¹ÎºÏÏ (thermikÏs, which means thermal). The term exothermic was first coined by Marcellin Berthelot. The opposite of an exothermic process is an endothermic process, one that absorbs energy in the form of heat. The concept is frequently applied in the physical sciences to chemical reactions, where as in chemical bond energy that will be converted to thermal energy (heat).