Chapter 15

Thermal Physics

KS5 p15.1 the kinetic theory of gases

Intro to Moles and ideal gas

Ideal gas explained and mole calculations .

KS5 p15.2 gas laws

Crushing a bottle with water pressure at 75 feet deep.mp4

Pressure and moles

pV = nRT

Practice

Practice ans

KS5 p15.3 root mean square speed

KS5 p15.4 the boltzmann constant

Practical

Demo :

Practical:

5 x the following

  • 1x Aluminium cube (200g or fits in the beaker)
  • 1x Water bath set at known temperature (thermometer)
  • 1x cooking oil or salter water or anything thats available
  • 1x beakers (to fit the cubes)
  • 1x thermometers
  • 1x tonges to handle metal block
  • 1x balance

Practical :

Students will work out the specific heat capacity of the liquid that the aluminium is placed in. With the aluminium block at thermal equalibrium in the water bath, it is then dropped into the unknown liquid. When thermal equilibium is reached the following calculations can determin the SHC of the liquid.

cliquid =( mblock x cblock x tempdiffblock) รท (mliquid x tempdiffliquid)

Risk

Risk:

  • Hot metal blocks
  • spillage of hot water

PAG - Estimating absolute zero

Practical

Demo :

Practical:

5 x the following

  • 1 x pressure gauges
  • 1 x Glass rounds fixed volume
  • 1 x Thermometers

2 x kettles

Estimating the value of absolute Zero.

Risk

Risk:

  • spillage of hot water
  • Delcate glassware