Midterm #2 Flashcards
(27 cards)
Exothermic
This releases energy(Heat)(Fire burning)
Endothermic
This absorbs energy of the surrounding(Ice melting)
exergonic
releases energy, meaning they are spontaneous and have a negative Gibbs free energy change
Endergonic
require an input of energy, are non-spontaneous, and have a positive Gibbs free energy change
enthalpy
the total heat content of a system at constant pressure
entropy
, the measure of a system’s thermal energy per unit temperature
activation energy
The amount of energy needed to initiate a reaction
rate of reaction
the speed at which a chemical reaction takes place
rate determining step
the slowest step of a chemical reaction that determines the speed of the rest of the process
reaction mechanism
describes the step-by-step process by which a chemical reaction occurs
heat of reaction
thermodynamic unit of measurement used for calculating the amount of energy per mole either released or produced in a reaction.
catalyst
something that speeds up a chemical reaction without changing itself
enzyme
biological catalists, speed up living chemical reactions
inhibitor
slows down a chemical reaction
reversible reaction
reactions that are equal both ways
forward reaction
reactants become products
reverse reaction
products become reactants
ideal gas molecule
point particles that have no volume in and of themselves.
requirements for an effective collision
activation energy, proper orientation
1 cal=
4.18j
chemical equilibrium constant
when a reation can go both ways
1 atm=
760 mmhg, 760 torr, 101,000 pa
pka=
1,000 pas
celcius to farenhight
cx9/5+32
