SOURCES WE USED:
http://en.wikipedia.org/wiki/Orange_juice
http://chemistry.about.com/od/acidsbases/a/phtable.htm
http://en.wikipedia.org/wiki/Chalk
http://www.phadjustment.com/Limestone.htm
ttp://geography.about.com/od/globalproblemsandissues/a/acidrain.htmh
http://butane.chem.uiuc.edu/pshapley/GenChem1/L26/3.html
http://en.wikipedia.org/wiki/Acetic_acid
http://homechemistry.blogspot.com/2007/11/chalk-and-vinegar.html
ds.kidipede.com/chemistry/atoms/doing/calcium.htm
p://en.wikipedia.org/wiki/Sulfuric_acidhtt
http://chemistry.about.com/od/acidsbases/a/phtable.htm
http://en.wikipedia.org/wiki/Chalk
http://www.phadjustment.com/Limestone.htm
ttp://geography.about.com/od/globalproblemsandissues/a/acidrain.htmh
http://butane.chem.uiuc.edu/pshapley/GenChem1/L26/3.html
http://en.wikipedia.org/wiki/Acetic_acid
http://homechemistry.blogspot.com/2007/11/chalk-and-vinegar.html
ds.kidipede.com/chemistry/atoms/doing/calcium.htm
p://en.wikipedia.org/wiki/Sulfuric_acidhtt