Bioc Topic 9

Front 1

Thermodynamics

Back 1

Describes the relationship among various forms of energy and how energy effects matter on the macroscopic level. Will tell us if the process is possible, and if it will be spontaneous. Does not determine the rate at which it occurs.

Front 2

Entropy

Back 2

acts as a measure of the disorder associated with the atoms or molecules that make up a substance. Increases with increasing temp.

Front 3

Second Law of thermodynamics

Back 3

the entropy of an isolated system increases.

Front 4

Equilibrium Constant

Back 4

the measure of the ratio of product concentrations to reactant concentrations at equilibrium.

Front 5

First Law of thermodynamics

Back 5

the energy of an isolated system is constant

Front 6

Isolated System

Back 6

Does not exchange energy of matter with the outside.

Front 7

Closed System

Back 7

If it exchanges energy but not matter.

Front 8

Open System

Back 8

If it exchanges energy and matter.

Front 9

Energy

Back 9

Capacity to do work

Front 10

Entropy

Back 10

Disorder

Front 11

Enthalpy

Back 11

H, closely related to energy Change in H = Change in E. Related to the amount of heat content in the system.

Front 12

Extensive properties

Back 12

Thermodynamic properties that are directly related to the amount of stuff present.

Front 13

Intensive properties

Back 13

Not directly related to mass.

Front 14

Gibbs Free energy

Back 14

G=H-TS . reaction will be spontaneous and proceed to the right if and only if change in G < 0. If delta G = 0 then Keq = 1. delta G < 0 then Keq >1 (exergonic and spon). delta G > 0. then Keq < 1 (endergonic and not spon)

Front 15

Coupled reactions

Back 15

when you add two reactions together, you add their delta G as well. Happens with ATP a lot.

Front 16

Other high energy compounds

Back 16

Creatine phosphate, phosphoenolpyruvate.