Chemistry As

About Chemistry As Android App

AS Chemistry; designed for exams from June 2014 onwards.

Questions are targeted for the AQA AS award 1421 and A level 2421 (Unit 1 and Unit 2), but is more that suitable for other specifications (please see the topic list below). Multiple modes target your learning, with explanations of correct answers (and Scheme of work reference).

Topic list -

3.1.1 Atomic Structure Fundamental particles
Protons, neutrons and electrons
Mass number and isotopes
Electron arrangement

3.1.2 Amount of Substance Relative atomic mass and relative molecular mass
The mole and the Avogadro constant (L)
The ideal gas equation
Empirical and molecular formulae
Balanced equations and associated calculations

3.1.3 BondingNature of ionic, covalent and metallic bonds 
Bond polarity 
Forces acting between molecules 
States of matter 
Shapes of simple molecules and ions 

3.1.4 PeriodicityClassification of elements in s, p and d blocks 
Properties of the elements of Period 3 to illustrate periodic trends 

3.1.5 Introduction to Organic ChemistryNomenclature 
Isomerism 

3.1.6 AlkanesFractional distillation of crude oil
Modification of alkanes by cracking
Combustion of alkanes

Unit 2

3.2.1 Energetics Enthalpy change (DH)
Calorimetry
Simple applications of Hess’s Law
Bond enthalpies

3.2.2 KineticsCollision theory
Maxwell–Boltzmann distribution
Effect of temperature on reaction rate
Effect of concentration
Catalysts

3.2.3 Equilibria The dynamic nature of equilibria
Qualitative effects of changes of pressure, temperature and concentration on a system in equilibrium
Importance of equilibria in industrial processes

3.2.4 Redox ReactionsOxidation and reduction
Oxidation states
Redox equations

3.2.5 Group 7(17), the HalogensTrends in physical properties
Trends in the oxidising abilities of the halogens
Trends in the reducing abilities of the halide ions
Identification of halide ions using silver nitrate
Uses of chlorine and chlorate(I)

3.2.6 Group 2, the Alkaline Earth MetalsTrends in physical properties
Trends in chemical properties

3.2.7 Extraction of MetalsPrinciples of metal extraction
Environmental aspects of metal extraction

3.2.8 HaloalkanesSynthesis of chloroalkanes
Nucleophilic substitution
Elimination

3.2.9 AlkenesAlkenes: structure, bonding and reactivity
Addition reactions of alkenes
Polymerisation of alkenes

3.2.10 AlcoholsNomenclature
Ethanol production
Classification and reactions
Elimination

3.2.11 Analytical TechniquesMass spectrometry
Infrared spectroscopy