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Name _______________________________ Block: _______ Atomic Structure and the Periodic Table Study Guide Complete the table below Element Name Element Symbol Atomic Number Amount of Protons Zinc Amount of Neutrons Average Atomic Mass 35 30 64 Copper 63 Rb Phosphorous Ti Fill in the blanks Symbol Name Metal, Nonmetal or Metalloid? K Si Ba S He 1. An element is: _______________________________________________________________________ 2. What two particles can be found in the nucleus? _____________ _______________ 3. One property of most nonmetals is that they are ___________________________. ( shiny / poor conductors / easy to shape / solid at room temperature ) 4. Metalloids have properties of metals and nonmetals and are often found in _____________________ material. Name _______________________________ Block: _______ 5. Protons have a mass of __________ amu (atomic mass unit). Neutrons have a mass of _________ amu. Electrons have a mass of _____________ amu. 6. Atoms are neutral if they have equal numbers of ____________________ and _____________________. 7. There are more metals than nonmetals on the Periodic Table. ( true / false ) 8. a) What is the difference between groups and periods on the Periodic table? _______________________________________________________________________ _______________________________________________________________________ b) Fill in the chart below. Element Copper Barium Sodium Curium Group # Period # 9. Why do elements in the same vertical column in the periodic table belong to the same family? _________________________________________________________________ 10.Define Isotope: _______________________________________________________________________ _______________________________________________________________________ 11.How would you write a lithium atom isotope with 5 neutrons? ___________ 12.One atom has 17 protons, 18 neutrons, and 17 electrons. Another atom has 17 protons, 19 neutrons and 17 electrons. Are these the same element? Yes No Explain: __________________________________________________________________ 13.Today we use Mendeleev’s arrangement, elements are arranged by increasing atomic _______________________. Name _______________________________ Block: _______ 14. Elements in a group on the periodic table share similar properties because their atoms have the same number of _______________ in their outer energy levels. 15.The most reactive metals are from which Group? __________________________ 16. Elements that are mostly non-reactive are from which Group? __________________ 17. The element family where all atoms are radioactive ____________________ 18.Determine the identity of an element that is a metal that is very reactive, has properties similar to Magnesium, and is in the same period as Bromine. __________________________________ 19.Which element is more reactive: Na or K? ___________________ 20. Rank the elements on the right from most to least reactive 21. How many valance electrons do the following elements have? a) Cesium (Cs): _______ b) Aluminium (Al): _______ c) Krypton (Kr): _______ d) Iodine (I): _______ Element Cl Ar Li Fe 22. a) Draw an atom of Hydrogen with 3 electrons, 1 proton, and 2 neutrons. b) How would you write the isotope notation for this atom?___________ Rank Name _______________________________ 23. For the following table color: a) The most reactive gases green b) The most reactive elements red c) The least reactive elements yellow d) The alkaline-earth metals blue e) The transition metals orange Block: _______ Name _______________________________ Block: _______ Answer Bank (Note: Diagrams not included) Democritus Ernest Rutherford J.J Thomson “All substances are made of atoms, which cannot be created, divided or destroyed” “Electrons travel around the nucleus in definite paths” Current model -“There are regions inside the atom where electrons are likely to be found called electron clouds” Scientist Atom Model Theory Came up with the word ‘atom’ All atoms are small, hard particles that are “uncuttable” and always moving Formed into different shapes and sizes Ancient Greek philosopher John Dalton Known for the “plum-pudding model” Electrons are small, negatively charged particles located throughout the positive material of the atom Conducted the gold foil experiment where positively charged particles bounced back Proved the existence of the nucleus Most of the atom’s mass is in the nucleus Niels Bohr Schrodinger and Heisenberg