AS-LEVEL OCR CHEMISTRY

Module 1 - Foundation Cemistry

Useful Chemistry Resources
A collection of chemistry resources and definitions that are applicable to the whole A-Level.

Atoms and Basic Atomic Structure
An overview of covalent and ionic bonding and structures.

Mass Spectrometer
The different stages of mass spectrometry and its uses.

Moles
How moles are used in chemistry and the basic moles equations.

Covalent Bonding and Atomic Shapes
The different atomic shapes: linear, tetrahedral, non-linear etc. and a more complex view of covalent bonding.

Electronegativity
How electronegativity can effect covalent bonds.

Intermolecular Forces and Covalent Structure
The different intermolecular forces and how these dictate properties.

Electronic Configuration
The electronic configuation of electrons.

Ionisation Energy and Period 3 Trends
Trends in ionisation energy and across period 3.

Oxidation Numbers and Ionic Equations
How to write ionic equations using oxidation numbers.

Chemical Reactions
Some important chemical reactions for module 1.

Group 7 - Halides and Halogens
Group 7 compounds and reactions.

 

Module 2 - Chains & Rings

Hydrocarbons: Alkanes
A detailed look at the alkanes, the most basic hydrocarbons.

Reaction of Alkanes
How the alkanes can react.

Hydrocarbons as Fuels
A look a fractional distillation and the processes carried out to improve the combustion and value of petrol.

Hydrocarbon: Alkenes
An introduction into alkenes and alkene bonding.

Alkene Reactions
A detailed look at alkene reactions and the reaction mechanism.

Alcohols
The uses and reactions of alcohols.

Infra-red Spectroscopy
How this can be used to identify different compounds by looking at the absorption patterns.

Halogenalkanes (Haloalkanes)
Information on the reactions of the different halogenalkanes.

 

Module 3 - How far, How fast?

Enthalpy Changes
What enthalpy changes are.

Determining Enthalpy Changes
H ow to calculate enthalpy changes.

Enthalpy Diagrams
The uses of enthalpy diagrams to understand chemical reactions.

Catalysts
How catalysts can be used to lower the activation energy and speed up a chemical reaction.

Dynamic Equilibrium
What dynamic equilibrium is and Le Chatelier’s principal.

Acids
What an acid is and how strong and weak, high concentration and low concentration acids differ.