Practice IB Chemistry Topic S2.4 from Models to Materials with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for S2.4 from Models to Materials and mirrors Paper 1A, 1B, 2 style where relevant.
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What is the primary reason why alloys are generally stronger than pure metals?
Which of the following best explains why stainless steel is more resistant to corrosion than pure iron?
Why does graphite conduct electricity along its layers (but not between layers), whereas diamond does not conduct?
Which of the following is a property of giant covalent structures like diamond?
The degradation of condensation polymers, such as proteins and polyesters, is an important process for sustainability and environmental impact.
State the type of reaction responsible for breaking down condensation polymers.
Describe in detail how this reaction occurs in both proteins and polyesters, including the specific bonds affected and products formed.
Suggest and explain one environmental factor that accelerates the degradation of condensation polymers in nature.
Discuss the role of enzymes in polymer degradation and explain how they influence the reaction rate.
Explain how entropy changes during the hydrolysis of condensation polymers and why this is important for spontaneity.