AS-Level Chemistry complete content and assessment objectives

Atoms and reactions
Atomicstructure and isotopes
Relative mass

Compounds, formulae and equations
Formulae and equations

Amount of substance
The mole
Determination of formulae
Calculation of reacting masses,gas, volumes and mole concentrations
Percentage yields and atom economy

Acids, bases, alkalis and neutralisation
Acid–base titrations

Oxidation number
Redox reactions

Electrons, bonding and structure

Electron structure
Energy levels, shells, sub-shells, atomicorbitals, electron configuration

Bonding and structure
Ionic bonding
Covalent bonding
The shapes of simple molecules and ions
Electronegativity and bond polarity

Periodic table and energy
The periodic table

The structure of the periodic table
Periodic trend in electron configuration and ionisation energy
Periodic trendin structure and melting point

Group 2 
Redox reactions and of Group2 metals 
Reactions of Group 2 compounds 

The halogens
Characteristic physical properties
Redox reactions and reactivity of halogens and their compounds
Characteristic reactions of halide ions

Qualitative analysis
Tests for ions

Physical chemistry

Enthalpy changes
Enthalpy changes: ∆H of reaction, formation, combustion and neutralisation
Bond enthalpies
Hess’ law and enthalpycycles

Reaction rates
Simple collision theory
The Boltzmann distribution

Chemical equilibrium
Dynamic equilibrium and le Chatelier’sprinciple
The equilibrium constant, Kc

Core organic chemistry

Basic concepts and hydrocarbon

Basic concepts of organic chemistry
Naming and representing the formulae of organic compounds
Functional groups
Reaction mechanisms

Properties of alkanes
Reactions of alkanes

Properties of alkenes
Stereoisomerism in alkenes
Addition reactions of alkenes
Polymers fromalkenes
Waste polymers and alternatives

Alcohols, haloalkanes and analysis
Properties of alcohols
Reactions of alcohols

Substitution reactions of haloalkanes
Environmentalconcerns fromuse of organohalogen compounds

Practical skills
Synthetic routes

Analytical techniques
Infrared spectroscopy
Mass spectrometry
Combined techniques

Assessment details

Assessment Objectives
  • AO1 Demonstrate knowledge and understanding of scientific ideas, processes, techniques and procedures.
  • AO2 Apply knowledge and understanding of scientific ideas, processes, techniques and procedures: • in a theoretical context • in a practical context • whenhandling qualitative data • whenhandling quantitative data.
  • AO3 Analyse, interpret and evaluate scientific information, ideas and evidence, including in relation to issues, to: • make judgements and reach conclusions • develop and refine practical design and procedures.