Gen Chem Review

Question 1

heat of fusion

Answer 1

solid to liquid (energy required)

Question 2

heat of vaporization

Answer 2

liquid to gas (lots of energy required)

Question 3

vapor pressure

Answer 3

at a given temp for a molecule, the pressure at which you have an equal number of things vaporizing as coming back down to liquid.

Question 4

Kinetic energy is a function of ___ and ___.

Answer 4

mass and velocity.

Question 5

Ideal gas equation

Answer 5

PV = nRT

Pressure x Volume = (number of paricles)x(some constant R)x(Temperature)

An ideal gas is one where the molecules aren’t concerned with each other, just themselves. So, don’t attract or repel, and actual volume is inconsequential.

Question 6

Bronsted-Lowry Acids

Answer 6

donate a hydrogen ion (proton).

A weak acid does not completely ionize; at equilibrium, there are appreciable quantities of un-ionized acid molecules present. Therefore, it is a weak electrolyte (not as good a conductor). Reactant-favored reaction.

Strong acids ionize completely and are good conductors.

Question 7

Bronsted-Lowry Bases

Answer 7

accept a hydrogen ion (proton).