Chemistry 3.4

An interactive companion resource that covers Achievement Standard 91390 – Demonstrate understanding of thermochemical principles and the properties of particles and substances, from NCEA Level 3 Chemistry. The first chapter investigates thermochemistry, particularly different enthalpy values and how to calculate them. The second chapter discusses periodic trends of atomic and ionic radii, electron configurations and ionization energies. The final chapter covers particles, drawing Lewis diagrams and using them to name molecular shape as well as polarity and intermolecular forces.