This Is What An Atom Really Looks Like
This unit is all about understanding: the true nature of atomic structure according to our most up-to-date atomic models; the shape and geometry of molecules, and how that directly influences the macro properties of useful substances in our everyday lives; and how a more advanced understanding of enthalpy and entropy can help us easily predict beforehand whether a chemical process is likely to occur spontaneously ("Wow, that was a large explosion...") or not happen at all ("Aw, nothing happened...")
We will first study atomic structure, quantum mechanics, and electron configuration. We will then apply that knowledge to better understand periodic trends (electonegativity, ionisation energy, atomic and ionic radii).
On top of that, we will expand upon our Level 2 knowledge of 3-D VSEPR molecular shapes and intermolecular forces, and apply that knowledge to study substances with useful properties and recent applications in our society, such as superconducting materials, nanomaterials, integrated-circuit chips, polymers, fuel cells, and more.
Finally, we'll heat things up a bit and explore thermodynamics in exciting contexts, such as solid vs liquid fuel propulsion systems in the aerospace industry.
Through learning these topics, students will be prepared for an external assessment worth 5 credits (AS91390).
Essential vocabulary: atomic number, atomic shell/subshell/orbital, electron configuration, electronegativity, ionisation energy, atomic radius, ionic radius, expanded octet, bond dipole, temporary dipole, permanent dipole, molecular dipole, polar vs non-polar, endothermic vs exothermic, enthalpy, entropy, Gibb's free energy, Hess's Law, spontaneous vs non-spontaneous, standard conditions, standard enthalpy of fusion/vaporisation/sublimation, standard enthalpy of combustion/formation