IB Chemistry Rates of Reaction Data Practice
A practice set for IB Chemistry Paper 2 in which students analyze gas-volume data from calcium carbonate and hydrochloric acid, plotting results, calculating rates, and interpreting how concentration and surface area affect reaction speed. Designed for a 60-minute independent or small-group session, it builds graphing, rate calculation, and scientific reasoning skills for upper-secondary students.
“Set an IB Practice Questions on calculation regarding rate of reactions”
Teacher Guide & Tips
- Use as a timed Paper 2-style practice block (about 45-60 minutes), either independently or in pairs, after students have covered collision theory and rate of reaction.
- Discussion question: Why does the rate of gas production slow down over time, and how does the shape of the curve relate to the changing concentration of hydrochloric acid?
- Scaffold for struggling students: Provide a worked example of calculating the gradient at a single point on a curve using a tangent, and remind them to label axes with units before plotting.
- Extension for advanced students: Ask them to predict how the curve would change if the experiment used powdered calcium carbonate or 0.5 mol dm⁻³ acid, and justify their predictions using collision theory.
- Estimated time: about 15 minutes for plotting and graphing questions, plus 30-40 minutes for the calculation and evaluation questions.
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Teacher Guide & Tips
- Use as a timed Paper 2-style practice block (about 45-60 minutes), either independently or in pairs, after students have covered collision theory and rate of reaction.
- Discussion question: Why does the rate of gas production slow down over time, and how does the shape of the curve relate to the changing concentration of hydrochloric acid?
- Scaffold for struggling students: Provide a worked example of calculating the gradient at a single point on a curve using a tangent, and remind them to label axes with units before plotting.
- Extension for advanced students: Ask them to predict how the curve would change if the experiment used powdered calcium carbonate or 0.5 mol dm⁻³ acid, and justify their predictions using collision theory.
- Estimated time: about 15 minutes for plotting and graphing questions, plus 30-40 minutes for the calculation and evaluation questions.
IB Chemistry Rates of Reaction Data Practice
A practice set for IB Chemistry Paper 2 in which students analyze gas-volume data from calcium carbonate and hydrochloric acid, plotting results, calculating rates, and interpreting how concentration and surface area affect reaction speed. Designed for a 60-minute independent or small-group session, it builds graphing, rate calculation, and scientific reasoning skills for upper-secondary students.
What is Diffit?
Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free