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7 Written questions

6 Multiple choice questions

  1. same element with different number of neutrons
  2. 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
  3. Number of Protons (Z)
  4. Protons and neutrons, make up most of the mass of the atom, extremely dense
  5. Groups 1A through 7A (aka Groups 1, 2, 13-18); display a wide range of physical and chemical properties
  6. 1 AMU is 1/12 of the mass of C-12

6 True/False questions

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

          

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

          

  3. JJ ThomsonDiscovered the electron, Plum Pudding Model, Cathode Ray Experiment (ray of electrons bent toward the positive plate)

          

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

          

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

          

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