Structure & Bonding
Ions - charged particles. Can be single atoms or groups of atoms.
Ionic bonding - transfer of electrons.
Dot and cross diagrams - show how ionic compounds are formed.
Ionic Compounds - have high melting points due to strong bonds.
Giant ionic lattice - structure from ionic compounds.
Covalent bonds - non-metal atoms bond together sharing pairs of electrons.
Simple molecular substances - made up of molecules containing a few atoms joined together by convlent bonds.
Polymers - long chains of repeating units. Atoms in a polymer are joined by strong convalent bonds.
Giant covalent structures / Macromolecules - all atoms are bonded to earch other by strong covalent bonds.
Allotropes - different structural forms of the same element in the same physical state.
Fullerenes - molecules of carbon, shaped like closed tubes or hollow balls.
Nanotubes - tiny carbon cylinders formed from fullerenes.
Alloys - a mixture of two or more metals or a metal and another element.
Nanoparticles - really tiny particles containing only a few hundred atoms.
Nanoscience - a science that investigates the uses and properties of nanoparticles.
Nanomedicine - small particles that can deliver drugs right into the cells where they're needed.