some information on John Dalton

John Dalton:

• known for pioneering work of modern atomic theory and research into color blindness
• he was color blind
• atomic theory- that matter is divided into small units called atoms
• Five main points of Dalton's atomic theory:
• Atoms from an element are different fromthe of any other element.
• All atoms of an element are identical.
• Atom of 1 element can combine with other elements to make chemical compounds
• Atoms can't be created, divided, or destroyed
• Elements are made of atoms

http://en.wikipedia.org/wiki/John_Dalton