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  • Chemistry Factsheet: 119. Molecular Mass Spectrometry : A Summary

    Chemistry Factsheet: 119. Molecular Mass Spectrometry : A Summary

    A vaporised sample is subjected to bombardment by high energy electrons (¤e-). This knocks one or more electrons out of the molecule’s structure producing a molecular ion radical, M+.(g) ...

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  • Chemistry Factsheet: 120. Calculating Equilibrium Compositions – A Cool Method!

    Chemistry Factsheet: 120. Calculating Equilibrium Compositions – A Cool Method!

    To succeed in this topic you need to:-  understand the work in Factsheet 1 on Atomic Structure  understand the work in Factsheet 6 on structure of elements and compounds, including how b...

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  • Chemistry Factsheet: 121. Why Students Lose Marks When Making Observations

    Chemistry Factsheet: 121. Why Students Lose Marks When Making Observations

    When carrying out calculations to find equilibrium constants such as Kc and Kp, the first stage of the process is to calculate the overall composition of the equilibrium mixture in terms of the number...

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  • Chemistry Factsheet: 122. Lewis Acids and Bases

    Chemistry Factsheet: 122. Lewis Acids and Bases

    To succeed in this topic you need to understand:  • the pH scale and Bronsted Lowry definitions of acids and bases  • dot and cross diagrams to show the outer electrons of atoms&...

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  • Chemistry Factsheet: 123. The Ideal Gas Equation

    Chemistry Factsheet: 123. The Ideal Gas Equation

    After working through this Factsheet you will understand:-  • What the Ideal Gas Equation is;  • How it convert into the SI units needed for the Ideal Gas Equation;  •...

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  • Chemistry Factsheet: 124. The Maxwell-Boltzmann Distribution

    Chemistry Factsheet: 124. The Maxwell-Boltzmann Distribution

    After working through this Factsheet you will understand:-  • What the Maxwell-Boltzmann Distribution is;  • How it changes at different temperatures;  • The meaning o...

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  • Chemistry Factsheet: 125. Why Students Lose Marks : Born-Haber Calculations

    Chemistry Factsheet: 125. Why Students Lose Marks : Born-Haber Calculations

    A sound basis for this topic is a good understanding of energy cycles and of  Hess’s Law in particular. Born Haber cycles are the application of  Hess’s Law to the formation of i...

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  • Chemistry Factsheet: 126. Racemisation

    Chemistry Factsheet: 126. Racemisation

    To succeed in this topic you need to understand:  • organic mechanisms, particularly nucleophilic substitution  • the structures of primary, secondary and tertiary haloalkanes&nb...

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  • Chemistry Factsheet: 127. The Gibb’s Free Energy Change and Spontaneity

    Chemistry Factsheet: 127. The Gibb's Free Energy Change and Spontaneity

    Before studying this Factsheet you need to understand:  1. Enthalpy changes of reaction, ∆H  2. Entropy (S) and entropy changes of reaction, ∆S....

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  • Chemistry Factsheet: 128. Key Definitions in AS Chemistry

    Chemistry Factsheet: 128. Key Definitions in AS Chemistry

    After working through this Factsheet you will be able to:  • define the key terms you will encounter in AS Chemistry  • understand and use the terms in their correct context ...

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