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Joseph Piestley
"Discovered oxygen, carbon monoxide, and nitrous oxide. Proposed electrical inverse-square law." http://chemistry.about.com/cs/history/a/aa020204a.htm -
John Dalton
"Proposed atomic theory based upon measurable masses. Stated law of partial pressure of gases." http://chemistry.about.com/cs/history/a/aa020204a.htm
http://www.google.com/search?pq=major+chemistry+contributions&hl=en&sugexp=gsih&cp=5&gs_id=g&xhr=t&q=bohr+model&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1024&bih=484&wrapid=tljp131913864726408&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi#um=1&hl=en&tbm=isch&sa=1&q=electron&oq=electro&aq=5&aqi=g10&aql=1&gs_sm=c&gs_upl=2547l5469l0l7797l7l7l0 -
Sir Joseph John Thomson
Discovered the electron http://www.chemistryexplained.com/Te-Va/Thomson-Joseph-John.html
http://www.google.com/search?pq=major+chemistry+contributions&hl=en&sugexp=gsih&cp=5&gs_id=g&xhr=t&q=bohr+model&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1024&bih=484&wrapid=tljp131913864726408&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi#um=1&hl=en&tbm=isch&sa=1&q=electron&oq=electro&aq=5&aqi=g10&aql=1&gs_sm=c&gs_upl=2547l5469l0l7797l7l7l0l2l2l0l282l1220l0.1.4l5l0&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=8c -
Niels Bohr
Made the Bohr model of the atom. "This model shows the atom as a group of electrons orbiting a positively charged nucleus in distinct energy levels." http://chemistry.about.com/b/2011/10/06/on-this-day-in-science-history-october-7-bohr-model.htm
http://www.google.com/search?pq=major+chemistry+contributions&hl=en&sugexp=gsih&cp=5&gs_id=g&xhr=t&q=bohr+model&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1024&bih=484&wrapid=tljp131913864726408&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi#um=1&hl -
Ernest Rutherford
"He demonstrated radioactivity was the spontaneous disintegration of atoms and was the first person to artificially disintegrate an element." http://chemistry.about.com/od/historyofchemistry/p/rutherford.htm
http://www.google.com/search?pq=major+chemistry+contributions&hl=en&sugexp=gsih&cp=5&gs_id=g&xhr=t&q=bohr+model&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1024&bih=484&wrapid=tljp131913864726408&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi#um=1&hl=en&tbm=isch&sa=1&q=electron&oq=elect -
Lavoisier A.L.
"Discovered nitrogen. Described the composition of many organic compounds. Sometimes regarded as the Father of Chemistry." http://chemistry.about.com/cs/history/a/aa020204a.htm -
Gay- Lussac, J.L.
"Discovered boron and iodine. Discovered acid-base indicators (litmus). Improved method for making sulfuric acid. Researched behavior of gases." http://chemistry.about.com/cs/history/a/aa020204a.htm -
Amedeo Avogadro
"Proposed principle that equal volumes of gases contain the same number of molecules." http://chemistry.about.com/cs/history/a/aa020204a.htm -
Sheele, C.W.
"Discovered chlorine, tartaric acid, metal oxidation, and sensitivity of silver compounds to light (photochemistry)." http://chemistry.about.com/cs/history/a/aa020204a.htm
http://www.google.com/search?pq=major+chemistry+contributions&hl=en&sugexp=gsih&cp=5&gs_id=g&xhr=t&q=bohr+model&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1024&bih=484&wrapid=tljp131913864726408&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi#um=1&hl=en&tbm=isch&sa=1&q=electron&oq=electro&aq=5&aqi=g10&aql=1&gs_sm=c&gs_upl=
