Energy
_________ is the capacity to do work
energy
a compound with ______ energy is more stable than a compound with _______ energy. higher/lower
lower, higher
When energy is released, the reaction is said to be.....
exothermic
When the bonds formed in the products are stronger than the bonds in the reactants it is a __________ reaction
exothermic
The unstable intermediate located at the top of the energy hill in an energy diagram is called the.....
transition state
________ is stored energy
potential
Breaking a bond _______ energy
requires
Endothermic reactions have a positive/negative enthalpy change
positive
the breaking of bonds is an endothermic/exothermic reaction
endothermic
The difference in energy between the reactants and the transition state is called the.....
Energy of activation
________ energy is energy in motion
kinetic
Forming a bond ________ energy
releases
The energy needed to break a covalent bond by equally dividing the electrons between the two atoms is called
bond dissociation energy
CH4 + 2O2 ----> CO2 + 2H2O delta H = -213
is this exothermic or endothermic? are the products or reactants higher in energy?
exothermic, products
________ _________ determines the rate of reaction
activation energy
water in a reservoir is ________ energy, water flowing down a river has _______ energy
potential, kinetic
_______ of ________ is the energy absorbed or released by any reaction
heat of reaction, also known as enthalpy change
negative
N2 + O2 ---> 2NO delta H = +180 kJ
is this exothermic or endothermic? Are the products or reactants higher in energy?
endothermic, reactants
In an energy diagram, when the reactants are higher than the products it is a __________ reaction and H is positive/negative
what law states that energy cannot be created or destroyed?
the law of conservation of energy
endothermic
When energy is absorbed, the products are higher/lower in energy than the reactants
higher
products
a ________ is something that lower the activation energy
catalyst