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Infection and response
Organisation
Cell biology
Biological molecules
Homeostasis and response
Responding to change (a2 only)
Energy transfers (a2 only)
The control of gene expression (a-level only)
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
Britain & the wider world: 1745 -1901
Inter-war germany
World war one
2n revolution and dictatorship: russia, 1917-1953
World war two & the holocaust
1l the quest for political stability: germany, 1871-1991
The cold war
2j america: a nation divided, c1845-1877
Medieval period: 1066 -1509
The fight for female suffrage
2m wars and welfare: britain in transition, 1906-1957
2d religious conflict and the church in england, c1529-c1570
Britain: 1509 -1745
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20/10/2022
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0.22 0 Chemical Reactions. During a into change products. • This means that as the chemical reaction proceeds, the reactants are. and the products Rates of Reaction. And 17 a chemical reaction the reactants. being used up • There are several methods of monitoring. measuring product is formed in a Signs of a Chemical Reaction. gas produced Smell See bubbles. •See a colour change Reaction Rates • For how much at a reactant is used 0 Photosiga thesis - Slow remetion. • Hydrolises - faust 0 Slow reaction. 0 Decomposing- • Striking a match fast nenenion -reaction. Jome ир given period of time. reaction. Collision Theory a chemical reaction to being formed. rate of reaction. have to callude with each other. • Smaller space to reach. ellsing a caralyor. • Higher temperature • Increasing Decreasing Concentration particle are reacting • Only = of these collisions will lead to a chemical reaction. These are can successful reactions. The more successful collisions, the faster the reaction rate. of The Minimum energy required for particles to callide is the activation energy. • This is collision theory. 5 Factors to speed Up a Chemical Reaction / Larger surface area Size. They all valy how much of a happen (whether it is slow or fart), partides that
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