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  • Chemistry Factsheet: 198. Answering Questions Involving Entropy Changes

    Chemistry Factsheet: 198. Answering Questions Involving Entropy Changes

    How to Answer Questions Involving Entropy, Entropy Changes and Total Entropy Changes This Factsheet initially covers entropy in a qualitative manner and the factors that affect the entropy (S) of a ...

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  • Chemistry Factsheet: 199. Measuring Reducing and Oxidising Powers by Electrode Potentials

    Chemistry Factsheet: 199. Measuring Reducing and Oxidising Powers by Electrode Potentials

    Prior KnowledgeBefore you start this module you should be able to :(a) calculate oxidation numbers.(b) define and recognise oxidation, reduction and disproportionationprocesses in terms of oxidation n...

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  • Chemistry Factsheet: 200. Van der Waals Forces

    Chemistry Factsheet: 200. Van der Waals Forces

    This Factsheet is designed to explain whatis generally meant by the phrase “Van derWaals Forces” and how these forcesaccount for the physical properties of many substances....

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  • Chemistry Factsheet: 201. The properties & reactions of transition metal ions in solution

    Chemistry Factsheet: 201. The properties & reactions of transition metal ions in solution

    To succeed in this topic you need to:-• Be familiar with the electronic configurations of the firsttransition series elements• Be familiar with the ability of these elements to exhibit varia...

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  • Chemistry Factsheet: 202. Isomerism in Alcohols

    Chemistry Factsheet: 202. Isomerism in Alcohols

    This Factsheet is designed to cover all aspects of the isomerism of alcohols across both AS and A2 syllabuses. As a consequence,parts of the factsheet would not be examined at AS level but mayprove of...

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  • Chemistry Factsheet: 203. Basic atomic structure

    Chemistry Factsheet: 203. Basic atomic structure

    Chemists have long believed that all matter is composed of “atoms”. How Big are Atoms?From about the 1920’s, X-ray crystallography and related techniques allowed atomic radii to be ...

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  • Chemistry Factsheet: 204. Chlorine and Chlorates

    Chemistry Factsheet: 204. Chlorine and Chlorates

    Chlorine as an Oxidising AgentChlorine is a strong oxidising agent.An Oxidising agent is a reagent that takes electrons (oxidises) from another species e.g. Cl2 (aq) + 2KI(aq) → 2KCl(aq) + I2(aq)...

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  • Chemistry Factsheet: 205. Applying electrode potential data

    Chemistry Factsheet: 205. Applying electrode potential data

    Reminders from Chem FactSheet 199: 1. Each half equation has an associated standard electrode potential e.g. Cu2+(aq) + 2e-  Cu(s) ; E = +0.34V2. Each electrode potential is measured relative to ...

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  • Chemistry Factsheet: 206. Enthalpy change of neutralisation

    Chemistry Factsheet: 206. Enthalpy change of neutralisation

    Measuring an Enthalpy Change of NeutralisationThis is achieved by a technique called calorimetry.Known quantities of acid and base (alkali) are mixed in a calorimeter. In a simple experiment, a polyst...

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  • Chemistry Factsheet: 207. E-Z Isomerism

    Chemistry Factsheet: 207. E-Z Isomerism

    Isomers are molecules with the same molecular formula but different structural formulas. Structural isomers differ in the sequence in which the atoms are bonded together....

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