Sample Exam Question [6 Marks]Cambridge & Edexcel Science
"Explain, in terms of collision theory and activation energy, why increasing the temperature increases the rate of a chemical reaction."
1. Command Word & Condition Scan (1 Mark)
Identify the exact command word ("Explain", "Describe", or "Evaluate"). Highlight physical variables, units, and conditions mentioned in the prompt.
Student Answer Execution:Prompt specifies: "Explain how increasing temperature affects rate of reaction in terms of particle collision theory."
Official Mark Scheme Match:Examiner looks for: Temperature increase → Higher kinetic energy.