Assess students' ability to analyze how temperature, concentration, surface area, and catalysts influence chemical reaction rates. Expect tasks that interpret rate–time and rate–concentration graphs, apply collision theory and activation energy to justify rate changes, compare heterogeneous vs. homogeneous effects, make simple quantitative estimates of relative rate changes where appropriate, and design or evaluate brief experiments isolating each factor. Suitable for grades 9–12 (medium difficulty), focus on analysis and explanation.