Prepared by Muneer K M

Physical Science

TOPIC

GAS LAWS

Characteristics of gas molecule

Atoms are loosely packed

Atoms have high moving capacities

There is low force of attraction between two atoms

There is great space between two atoms

Gas Laws Boyle’s law

Charles's law

Avogadro law

Boyle’s law The law state that “At constant temperature,

pressure and volume are inversely proportional”

Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant.

Mathematical expression of boyle’s law

Graphical representation of boyle’s law

Charles's Law Charles's law (also known as the law of volumes) is

an experimental gas law which describes how gases tend to expand when heated.

A modern statement of Charles's law is. When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.

Mathematical expression of Charles's law

Graphical representation of Charles's law

Avogadro’s law Avogadro's law states that, "equal volumes of all

gases, at the same temperature and pressure, have the same number of molecules". For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.

Mathematical expression

Graphical Representation

Conclusion Gas is the third form of the matter, oxygen is a gas ,

which is the fundamental gas of human beings and animals.