Energy Profiles & Catalysis Catalysis is the process in which the rate of a chemical reaction is increased, by adding a substance called a catalyst A catalyst increases the rate of a reaction b...
Maxwell-Boltzmann Curves Boltzmann distribution curve The Boltzmann distribution curve is a graph that shows the distribution of energies at a certain temperature In a sample of a substance, a few ...
Explaining Rates Concentration The more concentrated a solution is, the greater the number of particles in a given volume of solvent An increase in concentration causes in an increased collision fr...
Parallel & Perpendicular Gradients What are parallel lines? Parallel lines are equidistant meaning they never meet Parallel lines have equal gradients What are perpendicular lines? Perpendicula...
Basic Coordinate Geometry What is basic coordinate geometry? Basic coordinate geometry refers to working with points, lines and shapes on the coordinate axis Cartesian coordinates are simply the x ...
Rate Experiments During a reaction, the reactants are used up and changed into the products This means that as the reaction proceeds, the concentration of the reactants is decreasing and the concen...
Further Modelling with Functions Assumptions, criticisms and refinements in modelling Modelling is a large part of A level mathematics Assumptions and refinements to models often need to be conside...
Modelling with Functions What is a mathematical model? A mathematical model simplifies a real-world situation so it can be described using mathematics which can then be used to make predictions The...
Activation Energy For a reaction to take place, the reactant particles need to overcome a minimum amount of energy This energy is called the activation energy (Ea) In exothermic reactions the react...
