CHEMISTRY AS LEVEL Exam Board and Course

Edexcel GCE (from 2008) Chemistry

Link to Specification

http://www.edexcel.com/quals/gce/gce08/chemistry/Pages/default.aspx

Revision Topic List

Unit 1 1.3 Formulae and Moles - writing equations (full and ionic)

- calculations including the use of mass, volume, yields, atom economy and Avogadro’s number

- how to prepare a salt and a double salt - Interpret results from reactions including displacement and precipitation reactions.

1.4 Energetics - Construct enthalpy diagrams for exothermic and endothermic reactions

- Define and calculate key enthalpy terms including enthalpy of combustion, formation, neutralization and atomization - Apply Hess’ Law to calculate enthalpy changes using bond enthalpies - Use the expression E = m.s.ΔT

1.5 Atomic Structure and the Periodic Table - Describe principles of mass spectroscopy and interpret spectra - Explain how ionization energies relate to the periodic table

- Describe and explain electronic configuration in terms of 1s notation and electron density plots - Explain physical trends in the Periodic table eg. Melting temperatures and ionization energies

1.6 Bonding

- Describe and explain ionic, covalent and metallic bonding in terms of electrons - Represent ionic and covalent bonding using dot and cross diagrams - Identify stages within Born-Haber cycles and use calculations to comment on stability and polarisability of compounds

1.7 Introductory Organic Chemistry - Name and draw organic compounds

- Show the presence of isomers within alkanes and alkenes including cis/trans and e/z isomerism

- Describe reactions of alkanes and alkenes - Draw and explain mechanisms for free radical substitution of alkanes, electrophilic addition and polymerization of alkenes - Describe tests for alkenes - Interpret data about lifecycles of polymers and comment on the need for alternative fuels.

Unit 2 Shapes of Molecules and Ions

- Use electron-pair repulsion theory to predict the shapes and bond angles of molecules

- Draw 3-D diagrams for each different shape - Describe and explain the different structures of carbon in terms of

bond angles and shapes. Intermediate bonding and Polarity

- Explain electronegativity and use it to describe polarity in covalent bonding

- Predict which molecules have polar bonds and which are polar (distinguish between the two terms)

Intermolecular Forces (IMF)

- Describe different intermolecular forces in compounds - Relate IMF to physical properties (melting point/boiling

point/volatility etc) - Relate solubility to the types and amounts of IMF

Redox

- define key terms including oxidation, reduction, oxidation number - Write half redox equations and full balanced redox equations - use oxidation numbers to show oxidation/reduction

The Periodic Table – Groups 2 and 7

- State and explain trends down the groups for physical properties - Predict the properties of Astatine and Fluorine based on trends - Give and explain trends in solubility and thermal decomposition of

gp 2 nitrates and carbonates (including how to carry out the tests) - State tests for group 2 cations and group 7 anions - Describe the methods and observations for reactions of group 7

including halogens and halides - Carry out calculations for iodine-thiosulfate titrations

Kinetics

- state and explain factors that affect rate of reaction - relate explanations to Maxwell-Boltzmann graphs and activation

energy Chemical Equilibria

- Explain and give examples of dynamic equilibria - Explain how factors that affect rate affect the position of

equilibrium

Organic Chemistry + Mechanisms

- Name and draw structures for alcohols and halogenoalkanes - Reactions and tests for alcohols, and halogenoalkanes - Classify different reactions in terms of nucleophilic substitution - Describe and draw mechanisms including free radical substitution - Relate free radical substitution to the depletion of the ozone layer

Mass Spectra and IR

- Recall the basic principles of mass spec and IR - Interpret spectra and use wavenumbers to identify groups

Green Chemistry

- Explain how industries are becoming more sustainable - Relate green chemistry to production of CO2 and the depletion of

the ozone layer - Discuss carbon neutrality

Recommended revision books

Edexcel AS revision guide (as provided) CGP revision guides Jim Clarke Calculations (as provided)

Recommended revision websites

www.edexcel.com (past papers) www.chemguide.co.uk www.docbrown.info