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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.