Science

Tenth grade science is most commonly Chemistry, though some sequences place Biology here. Chemistry covers atomic structure and electron configuration, periodic trends, ionic and covalent bonding, nomenclature, and writing and balancing chemical equations.

The quantitative core is stoichiometry — the mole, molar mass, limiting reactants and percent yield — alongside gas laws, solutions and molarity, thermochemistry, acids and bases, and reaction rates. Laboratory work introduces titration, and calculation accuracy becomes the main driver of grades.