OZ Section 2 (e), (f), 9 Experiments involving Main chemical ideas: The electromagnetic – – (g), (h), (i), (o), (p), (q), (r), alkanes and bromine for spectrum and the interaction of radiation – (s), (t), (u) example . with matter; rates of reaction; radical reactions. Discussion of ozone‘s role Experiments on reaction as a then leads kinetics for example . Accurate use of the following terms will be ‘sunscreen’ – to ideas of the principal required: activation enthalpy and Using collision theory to types of electromagnetic homogeneous catalysis. explain rates (HSW1). radiation and their effects Greenhouse effect has moved to Oceans. on molecules. This Discussion of gases of the atmosphere, introduces a study of evidence of ozone depletion, properties, radical reactions, reaction advantages and disadvantages of CFCs and kinetics and catalysis, set in research leading to the discovery of the ozone the context of the ways in hole are not required. Recall of control of CO2 which ozone is made and is not required. destroyed in the The specific structures of diamond, CO2 and atmosphere. SiO2 are not in the specification, but these may be used as contexts in AO2 questions. Boltzmann distribution has been introduced - discuss the construction and interpretation of the its modification with temperature, and how changes in rate with temperature and catalysts can be interpreted with respect to Ea and the distribution. Ea is related to the energy of pairs of molecules.
OZ – Section 2 – (e), (f), (g), (h), (i), (o), (p), (q), (r), (s), (t), (u) Discussion of ozone‘s role as a ‘sunscreen’ then leads to ideas of the principal types of electromagnetic radiation and their effects on molecules. This introduces a study of radical reactions, reaction kinetics and catalysis, set in the context of the ways in which ozone is made and destroyed in the atmosphere. 9 Experiments involving alkanes and bromine – for example . Experiments on reaction kinetics – for example . Using collision theory to explain rates (HSW1). Main chemical ideas: The electromagnetic spectrum and the interaction of radiation with matter; rates of reaction; radical reactions. Accurate use of the following terms will be required: activation enthalpy and homogeneous catalysis. Greenhouse effect has moved to Oceans. Discussion of gases of the atmosphere, evidence of ozone depletion, properties, advantages and disadvantages of CFCs and research leading to the discovery of the ozone hole are not required. Recall of control of CO2 is not required. The specific structures of diamond, CO2 and SiO2 are not in the specification, but these may be used as contexts in AO2 questions. Boltzmann distribution has been introduced - discuss the construction and interpretation of the its modification with temperature, and how changes in rate with temperature and catalysts can be interpreted with respect to Ea and the distribution. Ea is related to the energy of pairs of molecules.
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