Acids and Alkalis

Chem4Kids - Acids Bases
http://www.chem4kids.com/files/react_acidbase.html

BBC.co.uk - Acids Bases Metals
http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/acids_bases_metals/revision/1/

NeoK12 - Acids & bases
http://www.neok12.com/Acids-and-Bases.htm

S-Cool.co.uk - Acids and Alkalis
http://www.s-cool.co.uk/gcse/chemistry/acids-and-alkalis/revise-it/acids-alkalis-and-neutral-substances

Mike Curtis - Acids
http://www.mikecurtis.org.uk/acids.htm

Presentation on Acid & Alkali
http://lgfl.skoool.co.uk/content/keystage3/chemistry/pc/learningsteps/ANALC/launch.html