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chemistry tke

chem vocab

QuestionAnswer
endothermic a chemical reaction or process in which a greater amount of energy is required to break the existing bonds in the reactants than is released when new bonds form in the product of molecules
exothermic a chemical reaction or process in which more energy is released than required to break bonds in the intial reactants
law of conservation of energy states than in any chemical reaction or physical process energy may change from one form to another but its neither destroyed or created
heat a form of energy that flows from a warmer object to a coller object
specific heat the amount of heat required to raise the remperature of one gram of a given substance by one degree of celsius
enthalpy the heat content of a system at a constant pressure
more heat of fusion the amount of heat required to melt one mole of a solid substance
more heat of vaporization the amount of heat required to vaporize one mole of a liquid
rate law the mathematical relationship between the rate of a chemical reaction at a given temperature and the concentration of reactants
collision theory states that atoms,ions,molecules must collide in order to react
activation energy the minimum amount of energy required by reaction particles in order to form the activate complex and lead a reaction
catalyst a susbstance that increases the rate of a chemical reaction by lowering activation energies but not itself consumed in the reaction
chemical equilibrim the state in which forward and reverse reactions balance each other because they occur at equal weights
le chatlier principle states that if stress is applied to a system at equilibium, the system shifts in the direction that relieves the stress
entropy a measure of anumber of possiple ways that the energy of a system can be distributed, related to the freedom of the systems particles to move and the number of ways they can be aranged
Created by: bradym228