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Review ch 4: Atoms and the Periodic Table You will be given a periodic table. Words you should know: Atom John Dalton Niels Bohr Proton electron nucleus orbital atomic mass semiconductor nonmetal element JJ Thomson Mendeleev neutron Lewis diagram ion energy level group/family metalloid Democritus Earnest Rutherford Quantum model Bohr model valence electron isotope atomic number period metal Formulas: not provided on the test, you should know them. Also, you can not use a graphing calculator on this test. If you want/need a calculator, bring a non-graphing one. + #p = atomic number #e- = #p+ in a neutral atom #n0 = atomic mass (rounded off) – atomic number Things you should be able to do: Describe the contribution of different scientists to our understanding of the atom by describing their model of the atom Compare and contrast older models of the atom to the current quantum theory. Read/interpret information from the periodic table (atomic mass, name, symbol, atomic number) Determine the number of protons, neutrons and electrons for any element Relate the organization of the Periodic Table to the arrangement of electrons within an atom Explain the relationship between atomic mass and isotopes of an element Draw/analyze and interpret Bohr models for elements 1-18 Draw/analyze Lewis dot diagrams for element in family 1, 2, 13 – 18. Tell the number of valence electrons in a group/family Relate arrangement of valence electrons to chemical properties Identify properties of elements according to their families (metal, nonmetal, noble gas, metalloid/semiconductor) Given the properties of an element, describe to which family (metal, nonmetal, noble gas, metalloid/semiconductor) it most likely belongs Determine the number of valence electrons for any element given its column on the periodic table (not including groups 3 -12) Determine the number of energy levels based on row in the periodic table Given a description of an element’s properties, identify it’s family/group of elements