Notes of Chapter 01: Basic Concepts 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.

Chemistry, a branch of physical science, is the study of the composition, properties and behavior of matter. Chemistry is concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds.

• Atom
• Relative atomic mass
• Isotopes
• Analysis of a compound - Empirical and molecular formulas
• Concept of a mole
• Stoichiometry
• Limiting reactant