14- Simple models of matter

Question 1

Boyle’s law?

Answer 1

Pressure, p is inversely proportional to volume, V so that pV is a constant at a constant temp.

Question 2

Ideal gas?

Answer 2

One in which the molecules dont interact at all, and are so tiny that they occupy negligible volume.

Question 3

Charle’s law?

Answer 3

For every degree rise in temp, the increase in volume is 3.66*10^-3 the volume of the sample at 0 degrees.

Question 4

Pressure law?

Answer 4

If volume is constant, pressure follows same same form as volume in Charles’ law.

Question 5

Ideal gas equation?

Answer 5

pV=nRT

Question 6

What happens to real gasses at low temp?

Answer 6

Molecules cool and sample contract and become close enough to interact.

Question 7

Kinetic model of gasses assumption?

Answer 7

Assume ideal gas. Assume all collisions are completely elastic.

Question 8

Kinetic model?

Answer 8

pV= 1/3 *Nm c^2 (rms)

Question 9

Why do real gases deviate from ideal gasses?

Answer 9

Van der waal forces and having dimensions.

Question 10

Energy of molecule?

Answer 10

3/2 *kT

Question 11

Distance travlled by molecule making N steps on average?

Answer 11

N^0.5

Question 12

First law of thermodynamics?

Answer 12

ΔU = W +Q