Topics

Concise lessons in the order they usually appear in class.

The building blocks of matter — protons, neutrons, electrons and how they arrange into shells.

Understand periods, groups, and trends like electronegativity and atomic radius.

Ionic, covalent, and metallic bonds — the forces that hold molecules and materials together.

Reactants become products. Learn the five main reaction types and how to spot them.

Use ratios of reactants and products to predict quantities in chemical reactions.

Learn the pH scale, neutralization, and the difference between strong and weak acids.

Energy flow in reactions — exothermic and endothermic, enthalpy and calorimetry.

Meet carbon — the atom of life — and its endlessly varied molecules.