This is a well established site that provides quality revision notes in all aspects of AS/A Level Chemistry. You can search through the notes using a Google search engine, or enter the site via a menu system.
http://www.chemguide.co.uk/This is a well organised site that has both notes and tests on many aspects of AS/A Level Chemistry. Questions are ‘marked' online and correct answers given.
http://www.docbrown.info/page04/page04.htmThis site contains notes and examination tips. They are written by Dr Rod Beavon of Westminster School and are appropriate for the AS/A Level Chemistry.
http://www.rod.beavon.clara.net/chemistry_contents.htmNotes on a number of topics relevant to AS/A Level Chemistry are included. The notes include a particularly good interactive Periodic Table. There is also access to Homework Help and to a Midnight Café chat-room.
http://www.beta-theta.com/Chemistry.htmlThis is a US site intended for first year undergraduates, but much is relevant to AS/A Level Chemistry. Notes, articles and tutorial are included. A number of experiment simulations can be accessed. The compound library is very good.
http://antoine.frostburg.edu/chem/senese/101/index.shtmlA lighthearted look at many aspects of Chemistry. There are a lot of links to useful pages written by teachers and students. Not all of this is relevant to AS/A Level, but much is. A wealth of information and a lot of fun.
http://www.chemmybear.com/A high quality interactive Periodic Table with photographs and information about each element.
http://www.rsc.org/periodic-table/A gallery of 3-D images representing atomic orbitals and molecular orbitals. Stunning images with comprehensive notes.
http://winter.group.shef.ac.uk/orbitron/This site provides absorption and emission spectra for any element selected from the Periodic Table.
http://jersey.uoregon.edu/vlab/elements/Elements.htmlA structured revision guide to the main topics in AS/A Level Chemistry with extensive notes and sample questions. Very good for examination preparation.
http://www.s-cool.co.uk/a-levelAn interactive site allowing students to pose questions and receive answers. There is an extensive list of previous questions and answers that can be accessed and searched. The site includes a student chat-line.
http://www.bbc.co.uk/schools/16/chemistry.shtml%20/