Part of the OCR GCSE Combined Science curriculum.
OCR GCSE Combined Science C5 Monitoring and Controlling Chemical Reactions is a step-by-step online learn guide for GCSE students in Years 10 and 11, mapped to the OCR specification (OCR GCSE (9–1) Gateway Science Combined Science A (J250) – C5 Monitoring and controlling chemical reactions). It covers concentration of solutions, measuring rates of reaction, rate of reaction graphs, collision theory and factors affecting rate, catalysts and enzymes, reversible reactions and dynamic equilibrium and changing the position of equilibrium, then brings it all together with mixed retrieval and exam practice.
There are 23 short steps of about 15 minutes (roughly 6 hours of learning), each made of bite-size explanations with key words, tables and examples, and every bite-size is followed by an activity you check straight away. Key terms include Concentration, Solute, Rate of reaction, Mean rate, Gradient, Tangent, Collision theory, Activation energy, Catalyst, Alternative pathway, Reversible reaction and Closed system.
