Notes of Chapter 03: Gases of “Chemistry XI” for FSc Part 1 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare Chemistry paper of FSc Part 1 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

Matter exists in four states i.e. solid, liquid, gas and plasma. The simplest form of matter is the gaseous state and most of the matter around us is in the solid state …

• States of atter
• Gas laws
• General gas equation
• Avogadro's law
• Dalton's law of partial pressure
• Diffusion and effusion
• Kinetic molecular theory of gasses
• Kinetic interpretation of temperature
• Liquefaction of gases
• Non-ideal behaviour of gases
• Plasma state