2.4
From Models to Materials
Real-world applications: composites, polymers, and alloys.
2.4.1 Bonding Continuum
Van Arkel-Ketelaar Triangle. Predicting bonding from electronegativity.
→2.4.2 Position in the Bonding Triangle
Plotting binary compounds using average χ and Δχ. Predicting properties.
→2.4.3 Alloys
"Disrupted Lattice" mechanism. Why alloys are harder than pure metals.
→2.4.4 Addition Polymers
Addition polymerization. Identifying monomers and repeating units.
→2.4.5 Addition Polymerisation
Repeat units, atom economy, and environmental impact of addition polymers.
→2.4.6 Condensation HL
Polyesters, polyamides. Biodegradability and hydrolysis.
→Exam Practice
MCQs, data analysis & structured questions with mark schemes.
Flashcards
Review key definitions and concepts with interactive flashcards.