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GCSE level Chemistry: Index of rates of reaction notes - rate factors and investigations

RATES of REACTION revision notes INDEX (re-edit)

Doc Brown's Chemistry science GCSE 9-1, IGCSE & O level Revision Notes - Doc Brown's chemistry revision notes: basic school chemistry science GCSE chemistry, IGCSE  chemistry, O level & ~US grades 8, 9 and 10 school science courses or equivalent for ~14-16 year old science students for national examinations in chemistry

Red + green represent reactants and blue + purple represent products

Fruitful collisions = chemical change, if only it were that simple, lots of factors to consider!


What do we mean by the rate/speed of reaction?

Why is it important to know how fast reactions occur?

How can we measure the speed or rate of a chemical reaction?

Experimental methods are described in this introduction & subsequent sections

2. Collision theory of chemical reaction rate factors

A general introduction, then applied to sections 3a to 3e

3. Factors affecting the speed/rate of a chemical reaction:

3a Effect on rate of changing reactant concentration in a solution/gas mixture

3b Effect on rate of changing pressure in reacting gases (gas equivalent of 3a)

3c Effect on rate of changing particle size/surface area, stirring mixture of a solution-solid reactant

3d Effect on rate of reacting on changing the temperature of reactants

3e Effect on rate of reaction using a catalyst in a chemical reaction

See also

Activation energy and reaction profiles and effect of catalysts

Enzymes - biological catalysts, optimum pH or temperature, use in biotechnology (GCSE level chemistry notes)

Enzymes - structure, function, optimum conditions, investigation experiments (GCSE level biology notes)

3f Light initiated reactions - effect of changing intensity

4. Examples of graphs of rate data, interpretation a summing up of ways your rate data can be analysed and interpreted including using a tangent graphical method


GCSE Level Combined QUIZ on rates of reaction, reversible reactions, equilibrium. Le Chatelier's Rules

Sections 5 to 7 are for Advanced Level Chemistry Students ONLY (separate page)

Some ideas to help you with RISK ASSESSMENT when designing and performing 'Rates of Reaction' experiments and many other experimental procedures. Some aspects listed are applicable to 'rates/kinetics' assignments, others are not applicable at all. Its up to you to decide!

What next? Associated Pages

UK GCSE, IGCSE and US grade 8-10 Level RATES QUIZ QUESTIONS and WORKSHEETS printout or online:


GCSE Word-fill quiz "What factors Affect the Speed of a Chemical reaction?"

CROSSWORD PUZZLE on rates of reaction and ANSWERS!

GCSE Level Combined QUIZ on rates of reaction, reversible reactions and equilibrium - Le Chatelier's Rules

See also Reversible Reactions Notes

See also  Reversible reactions and Equilibrium Notes

GCSE Level (~US grade 8-10) School Chemistry Notes (students age ~14-16)

Find your GCSE science course for more help links to revision notes

ALL my Advanced Level pre-university Chemistry Notes

Advanced Level KINETICS index



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GCSE level 'Rates of Reaction' multiple choice quiz


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