Demokritos (460 – 370 f. Kr) A´tomos = odelbar Aristotelse (384 – 322 f. Kr) LUFT ELD Aristoteles fyra grundelement JORD VATTEN John Dalton (1766 – 1844) Jöns Jacob Berzelius (1779 – 1848) Dmitrij Mendelejev (1834 – 1907) PROTON (+) NEUTRON (Neutralt laddad) ELEKTRON (-) Ernest Rutherford (1871 – 1937) Niels Bohr (1885 – 1962) • http://www.euripides-europe.com/en/bilder/DRC_logo.jpg • http://jdwaggoner.files.wordpress.com/2008/06/atom.jpg • http://minerva.bloggsida.se/files/2010/03/Aristoteles005.jpg • http://www.tyreso.se/upload/Milj%C3%B6%20och%20h%C3%A4lsa/luft_6.jpg • http://litelagombesatt.blogg.se/images/2008/vatten-webb-360_14396261.jpg • http://www.vanersborg.se/images/18.5a92112b124b835ceb480003245/Torr-jord.jpg • http://nattarovandrarhem.blogg.se/images/2010/eld1_87522530.jpg • http://www.mayoclinic.org/tradition-heritage-artifacts/images/2-1-med.jpg • http://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Berzelius_painted_by_S%C3%B6dermark_1843.jpg/250pxBerzelius_painted_by_S%C3%B6dermark_1843.jpg • http://swedish.ruvr.ru/data/252/613/1233/mendeleev.jpg • http://www.passive-matrix.co.uk/images/Atom.jpg • http://descubriendo.fisica.unlp.edu.ar/descubriendo/images/f/f3/Rutherford.jpg • http://www.freeinfosociety.com/media/images/1186.jpg