Thermals and Gases

Question 1

Internal Energy

Answer 1

The sum of the randomly distributed kinetic and potential energies of the particles in body

Question 2

Specific Heat Capacity

Answer 2

Energy required to increase the temperature of 1kg of a substance by 1K /1C

Question 3

Specific Latent heat of fusion

Answer 3

Energy required to change the state of 1kg of a substance from solid to liquid without a change in temperature

Question 4

Specific Latent heat of vaporisation

Answer 4

Energy required to change the state of 1kg of a substance from liquid to gas without a change in temperature

Question 5

Gas movement

Answer 5

Travel in random directions with a VARIETY of speeds
(not RANDOM speeds)

Question 6

Boyle’s Law

Answer 6

For a fixed mass of ideal gas at a constant temperature, pressure is inversely proportional to volume
p -> 1/V

Question 7

Charles Law

Answer 7

For a fixed mass of ideal gas at a constant pressure, volume is directly proportional to ABSOLUTE temperature

Question 8

Pressure Law

Answer 8

For a fixed mass of ideal gas at a constant volume, pressure is directly proportional to ABSOLUTE temperature

Question 9

Ideal Gas

Answer 9

Gas which obeys the gas laws at all temperatures and pressures.
no Ep, so sum of Ek = internal E

Question 10

Ek and T

Answer 10

Ek is ONLY dependent on temperature
All gases have the same average Ek at any temperature

Question 11

Brownian Motion

Answer 11

Small particles (e.g. smoke) in a liquid or gas are move in a random directions with a variety of speeds. They move when momentum is transferred from collisions with smaller molecules in gas or liquid.