Atoms and Molecules

This topic covers concepts such as Laws of Chemical Combination, Law of Conservation of Mass, Law of Constant Proportions, Dalton's Atomic Theory, Postulates of Dalton's Atomic Theory, History of Laws of Chemical Combination, Reactants, and Products.

This topic covers concepts such as Atoms and Molecules, Atom, Size of Atom, Significance of Atoms, Naming of Elements, Element Names Based on Place of Discovery, IUPAC Name and Symbols of Some Elements, etc.

This topic covers concepts such as Molecules of Compounds, Molecule, Molecules of Elements, Molecules of Noble Gases, Molecules of Non-Metals, Atomicity, Molecule of Ammonia, Molecule of Carbon Dioxide, and Ratio by Mass in Compounds.

This topic covers concepts such as Ions, Cation, Anion, Naming of Common Ions, Symbols Used for Common Ions, and Ionic Compounds.

This topic covers concepts such as Chemical Formulae of Compounds, Rules for Writing Chemical Formulae, Writing Chemical Formula of Hydrogen Chloride, Writing Formula of Magnesium Chloride, Writing Formula of Calcium Oxide, etc.

This topic covers concepts such as Molecular Mass, etc.