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7 Written questions

6 Multiple choice questions

  1. Discovered the electron, Plum Pudding Model, Cathode Ray Experiment (ray of electrons bent toward the positive plate)
  2. Groups 3-12
  3. 1 AMU is 1/12 of the mass of C-12
  4. Group 2A (aka Group 2); shiny solids; harder than alkali metals; turn white when exposed to oxygen; never found alone in nature; make +2 ions
  5. Group 7A (aka Group 17); never found alone in nature; make -1 ions; Fluoride (F) and Chloride (Cl) are gases at room temperature; Bromine (Br) and Iodine (I) are liquids at room temperature; Astatine (At) is not a halogen
  6. Top row: Lanthanides (4f); Bottom Row: Actinides (5f); most are radioactive; all actinides starting at plutonium are man-made; all are solids

6 True/False questions

  1. Noble GasesProtons and neutrons, make up most of the mass of the atom, extremely dense

          

  2. Atomic NumberNumber of protons plus number of neutrons (A)

          

  3. Average Atomic MassGroup 1A (aka Group 1); low density, soft, never found alone in nature, reacts with water, make +1 ions, hydrogen is not an alkali metal

          

  4. DaltonGroup 7A (aka Group 17); never found alone in nature; make -1 ions; Fluoride (F) and Chloride (Cl) are gases at room temperature; Bromine (Br) and Iodine (I) are liquids at room temperature; Astatine (At) is not a halogen

          

  5. Isotopes1. All elements are composed of tiny indivisible particles called atoms
    2.Atoms of the same elements are the same
    3. atoms can be combined in simple whole number ratios to make compounds
    4. Chemical reactions occur when atoms are separated, joined, rearranged

          

  6. Representative ElementsGroups 3-12