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  • Chemistry Factsheet: 141. Answering Exam Questions: Rates of Reaction

    Chemistry Factsheet: 141. Answering Exam Questions: Rates of Reaction

    Extract from Examiners' Report:  ‘Disappointing numbers of  candidates failed to rearrange the equation correctly to produce  k as the subject.'  ...

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  • Chemistry Factsheet: 142. The Chemistry of the Ozone Layer

    Chemistry Factsheet: 142. The Chemistry of the Ozone Layer

    In order to succeed in this topic, you will need not only to understand  the chemistry, but also to be able to discuss the issues surrounding  the use of CFCs and the ozone layer in the up...

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  • Chemistry Factsheet: 143. Are Biofuels Carbon Neutral?

    Chemistry Factsheet: 143. Are Biofuels Carbon Neutral?

    To succeed in this topic you need to understand:  • why plants use carbon dioxide in photosynthesis  • why we need to find alternatives to fossil fuels  • what global ...

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  • Chemistry Factsheet: 144. Catalytic Converters

    Chemistry Factsheet: 144. Catalytic Converters

    To succeed in this topic you need to understand:  • how catalysts increase the rates of chemical reactions  • the environmental impact of the pollutants formed in internal combus...

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  • Chemistry Factsheet: 145. Degradable Polymers

    Chemistry Factsheet: 145. Degradable Polymers

    To succeed in this topic you need to understand:  • the formation and structure of addition and condensation  polymers  • the reasons why the use and disposal of polymers c...

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  • Chemistry Factsheet: 146. Fuel Cells

    Chemistry Factsheet: 146. Fuel Cells

    The fuel cell was originally conceived by a German scientist, Christian  Schoenbein, but Sir W. R. Grove developed the first working fuel cell  in about 1842. In his cell he reacted hydrog...

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  • Chemistry Factsheet: 147. C-13 Nuclear Magnetic Resonance (nmr) Spectroscop

    Chemistry Factsheet: 147. C-13 Nuclear Magnetic Resonance (nmr) Spectroscop

    C-13 nmr spectroscopy is used to detect and differentiate C atoms  in organic molecules by detecting C-13 isotopes....

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  • Chemistry Factsheet: 148. Chiral Compounds as Medicines

    Chemistry Factsheet: 148. Chiral Compounds as Medicines

    In order to succeed in this topic you will need a very sound knowledge  of optical isomerism.  Remember optical isomers are non-super  imposable mirror images of each other;  the...

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  • Chemistry Factsheet: 149. Friedel Crafts Reactions

    Chemistry Factsheet: 149. Friedel Crafts Reactions

    To succeed in this topic you need to:-  • Remember the chemistry of halogenoalkanes and acyl chlorides  • Remember that electrophilic attack on arenes results in substitution&nbs...

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  • Chemistry Factsheet: 150. How to Answer AS Exam Questions On Bonding

    Chemistry Factsheet: 150. How to Answer AS Exam Questions On Bonding

    You need to know and understand all related ideas before you can gain maximum credit when answering exam questions on any particular  topic. To help you, the following provides a summary of the ...

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