AP Chemistry - 3.5: Kinetic-Molecular Theory & Graham's Law

Boltzmann distribution curve

As temperature increases, velocity ____.

increases

As velocity increases, kinetic energy _____.

increases

True or False: Heat and temperature are the same.

False

Temperature

a numerical measure of the average kinetic energy in the molecules of a material

“Which of these molecules has the greatest average kinetic energy?”

Is the same as?

Which of these molecules has the greatest temperature?

Why are Kelvins used in SI regarding temperature and kinetic energy?

As temperature in Kelvins doubles, the kinetic energy also doubles

Heat

form of energy transferred between two systems at different temperatures

Heat synonym

Thermal energy

What is heat measured in

Joules

What does Graham's Law of Effusion simply describe?

the rate at which gas particles move

How is the rate of movement of gas particles related to it’s molecular mass?

Inversely proportional 

Graham’s Law of Effusion

A gas with a greater molecular mass will have a ______ rate of movement.

Decreased

Graham’s Law of Effusion - Say it simply

Lighter gases move faster, heavier gases move slower

Effusion

the escaping of molecules through a very tiny hole in a material.