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IB Chemistry HL 2.4.3 Alloys and composite materials Question Bank

Practise IB Chemistry HL 2.4.3 by analysing alloy and composite microstructure and selecting materials for engineering uses.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Analyse how atomic-size mismatch and composition change the mechanical behaviour of an alloy.
  • Distinguish an alloy from a composite using composition, structure and property evidence.
  • Evaluate a material choice by balancing hardness, conductivity, strength and service conditions.

2.4.3—Alloys question 1

[Maximum number: 2]

Titanium and vanadium are consecutive elements in the first transition metal series.

Explain why an aluminium-titanium alloy is harder than pure aluminium.

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