Chapter 6 Flashcards
Mechanical E
E of motion of macro scale objects
Thermal E
E of motion of microscale objects
Electrical E
E of motion of electrons through a conductor
Sound E
E corresponding to expansion and compression of spaces between molecules
Potential energy
Energy of position or some force capable of changing that position
Energy
The capacity to do work
Electrostatic PE
Attraction of two dissimilarly charged particles that are a short distance apart
Chemical PE
A form of potential energy related to the structural arrangement of atoms or molecules
Collision theory
For a reaction to occur there must be collision orientation energy
Rate of reaction
Change in the quantity of something over a given period time
Factors that influence the speed of reactions
Nature of reactants, temperature, concentration, catalysts
Nature of reactants
Small molecules tend to react faster than large molecules
Gases tend to react faster than liquids which react faster than solids
Powdered solids are more reactive than blocks
Ions tend to react faster than molecules
What is K
Equilibrium constant
[C]c[D]d / [A]a[B]b
When K»1
Reaction is product favored
K
Reaction is reactant favored
