### Video lessons on heat and the kinetic theory of gases

These video tutorials are a series of 11 explanations of key topics including specific heat capacity and specific latent heat, the gas laws, kinetic theory of gases, Avagadro's Law, the mole and ideal gases. A brief outline of the content of each video is given below and at the bottom of the page is an example video which is the first part of a lesson on the list, The Kinetic Theory of Gases

Specific Heat Capacity  5m    (In GCSE, 14 to 16 years, collection also suitable for A level introduction)

The video explains what SHC is and how it can be found experimentally, with a simple demonstration of an experimental process and calculation from the results. Covering the requirements for A level and 16 to 19 physics almost everywhere.

Specific Latent Heat  4m     (In GCSE, 14 to 16 years, collection also suitable for A level introduction)

Explaining what SLH is and how it can be found experimentally, with a simple demonstration of an experimental process and calculation from the results. Covering the requirements for A level and 16 to 19 physics almost everywhere.

The kinetic theory of gases:  7m

A section common to every A level syllabus and to 16 to 19 physics the world over. The video follows through the theory explaining where assumptions are made which define an “ideal gas”, explaining the algebra to define the equation pV = 1/3 mNc2

Boyle's Law  3m

States that the pressure of a fixed amount of gas at a constant temperature is inversely proportional to the volume.  The video uses simple animation to explain this connection in terms of molecular motion and to show how the equation is used.

Charles's Law  3m 45s
Relates the volume of a fixed amount of gas at constant pressure to the kelvin temperature. The video used animation to help to explain that connection in terms of molecular motion and how the derived equation is used.

The Kelvin temperature scale  4m 30s     (Some of this is in GCSE, 14 to 16 years, collection also suitable for A level introduction)
The video demonstrates a simple experimental method of finding the value of absolute zero, the base of the Kelvin scale and how that is related to the Celcius scale.

Brownian motion   3m    (In GCSE, 14 to 16 years, collection also suitable for A level introduction)
Brownian motion is demonstrated with a microscope and smoke with an animation to help provide a molecular explanation.

Avagadro’s Law is an important idea which is explained along with the measurement of a mole and the connection to Avagadro’s number and sample calculations.

Gas equations  4m
An explanation of the general gas equation, the universal gas constant and Boltzmann’s constant. Showing also why we directly relate the kinetic energy of molecules to the kelvin temperature.

Example questions using gas equations  3m 45s
These are basic questions of the type used by all UK examination boards (and others world wide). The PDF provides a copy of the questions and the answers and the video explains how they can be tackled.

Ideal and real gases  2m 45s
We have assumptions which are made about gases when we call them ideal. The video highlights the assumptions and gives a brief account of how real gases at higher pressure and temperatures may differ from the ideal including animation and the effect of change of pressure on temperature.

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