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7 Written questions

6 Multiple choice questions

  1. Top row: Lanthanides (4f); Bottom Row: Actinides (5f); most are radioactive; all actinides starting at plutonium are man-made; all are solids
  2. Group 1A (aka Group 1); low density, soft, never found alone in nature, reacts with water, make +1 ions, hydrogen is not an alkali metal
  3. 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
  4. weighted average of all the isotopes
  5. same element with different number of neutrons
  6. Greek philosopher, 1st to conceive of matter being particulate

6 True/False questions

  1. James ChadwickDiscovered the electron, Plum Pudding Model, Cathode Ray Experiment (ray of electrons bent toward the positive plate)


  2. Robert MillikanGroup 8A (aka Group 18); all inert (non-reactive) gases; always found alone in nature; all other elements strive to have a noble gas configuration


  3. Representative ElementsGroups 1A through 7A (aka Groups 1, 2, 13-18); display a wide range of physical and chemical properties


  4. NucleusProtons and neutrons, make up most of the mass of the atom, extremely dense


  5. Dalton1. 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. Ernest RutherfordDiscovered that the nucleus was positive, mostly empty space, and very dense. Also discovered the proton. Performed the Gold Foil Experiment