Rate of reactions
Interpret G3 Science Chemistry reaction-rate data and use collisions to explain concentration, gas pressure, particle size and temperature effects.
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Before you begin
Interpret G3 Science Chemistry reaction-rate data and use collisions to explain concentration, gas pressure, particle size and temperature effects.
Learning goals
- Interpret data from rate of reaction experiments
- Describe how concentration, pressure, particle size and temperature affect reaction rate, and explain each effect using collisions between particles
Syllabus statements covered
- describe the effect of concentration, pressure, particle size and temperature on the rates of reactions and explain these effects in terms of collisions between reacting particles
- interpret data obtained from experiments concerned with rate of reaction.
Lessons
Work through them in order.
- Measuring rate and reading rate dataChoose what to measure, calculate an average rate over an interval and read gas, reactant and mass curves without confusing rate with final amount.
- Explaining rate factors with collisionsExplain how concentration, pressure, particle size and temperature change the rate using collisions, and judge which factor controlled data show.
- Planning a fair rate investigationChoose controls, evaluate comparisons and use rate data to write a supported conclusion.
Practise and check
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