Core Practical: Investigate the effects of changing the conditions of a reaction on the rates of chemical reactions by:
a) measuring the production of a gas (in the reaction between hydrochloric acid and marble chips)
b) observing a colour change (in the reaction between sodium thiosulfate and hydrochloric acid)

Suggest practical methods for determining the rate of a given reaction

Explain how reactions occur when particles collide and that rates of reaction are increased when the frequency and/or energy of collisions is increased

Explain the effects on rates of reaction of changes in temperature, concentration, surface area to volume ratio of a solid and pressure (on reactions involving gases) in terms of frequency and/or energy of collisions between particles

Interpret graphs of mass, volume or concentration of reactant or product against time

Describe a catalyst as a substance that speeds up the rate of a reaction without altering the products of the reaction, being itself unchanged chemically and in mass at the end of the reaction

Explain how the addition of a catalyst increases the rate of a reaction in terms of activation energy

Recall that enzymes are biological catalysts and that enzymes are used in the production of alcoholic drinks