Board, Chemistry, Questions, Paper.
chemical combination ➭ Dalton’s atomic theory ➭ Mole concept and stoichiometry ➭ Chemical equations and balancing Chapter 2: Structure of the Atom ➭ Subatomic particles: protons, neutrons, electrons ➭ Atomic number, mass number, isotopes ➭ Atomic models: Rutherford, Bohr, modern quantum mechanical