Basic concept of chemistry- Importance and scope of chemistry in daily life and agriculture. Measurements in chemistry- Significant figures and international units of measurement. Laws of chemical combination. Dalton’s atomic theory- initial concept of elements, atoms and molecules. Avogadro hypothesis and its uses. Mole concept and Avogadro number. Initial concept of atomic weight, equivalent weight and molecular weight. Percentage composition, empirical formula and molecular formula. Stoichiometry of chemical reaction and calculation, limiting reagent.
