IB skill practice

Evaluate IA-style chemistry methodology and validity

Paper 1, Paper 2 5 marks Difficulty 5

Conclusion supported by evidence

A conclusion in a Auckland synthesis workshop claims the reaction is first order, but the data only show two trials with both concentration and temperature changed. Evaluate the conclusion. Use the labelled mechanism, pathway, data table, or method diagram before answering. Enter the answer and choose the interpretation that matches the HL chemistry evidence.

Worked practice: chemistry evidence and answer

Use the chemical evidence first, then enter the result and interpretation that match it.