abeka phy sci 9 section 15.2

study of relationship between chemical reactions and the laws of thermodynamics

relates energy gained by a system to the energy lost by its surroundings

energy is released

energy is absorbed

every chemical reaction causes a decrease in usable energy and an increase in entropy

reaction that occurs without continuing outside help

deals with rates of chemical reactions

kinetic energy that’s necessary for molecules to react

alters the rate of a chemical reaction without being permanently changed by the reaction

reaction that proceeds either direction

two reactions in opposite directions occur at the same rate with no change

system at equilibrium is disturbed, the system will react to partially offset the disturbance