Table of contentsMatter is made up of atoms:early history of chemistryDalton´s atomic theory:elements are made up of atomsatoms vary in sizeatoms vary in mass / relative atomic massThomson´s plum pudding model:cloud of positive chargenegatively charged electronsBohr´s quantum model:orbits, valence electronsDimitri Mendeleev´s periodic tableThe periodic table: elements are arranged according to:increasing atomic numberperiodsgroupsWhich information does the periodic table provide?metals / nonmetalswhat atoms look likewhat chemical properties an element hasKeywords: English-German |
