2.4 From models to materials

Objective notes

6 learning objectives

2.4.1Bonding continuum

• Ionic ↔ covalent ↔ metallic

• Bonding triangle representation

2.4.2Bonding triangle

• Position determined by relative contributions of three bonding types

• Predict properties from position

• Use electronegativity data to place compounds in the bonding triangle

2.4.3Alloys

• Mixtures of metals with enhanced properties

• Non-directional bonding

2.4.4Polymers

• Macromolecules from repeating monomers

• Properties of plastics

2.4.5Addition polymers

• Form by breaking double bonds in monomers

• Represent repeating units from given alkene monomers

2.4.6(HL)—Condensation polymers

• Form with release of small molecule

• Polyamides and polyesters

• Represent repeating units from given difunctional monomers