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First Unit Review

  1. What is an element?
  2. What is a compound?
  3. List the three main subatomic particles. In a data table, give their symbol, charge, approximate relative mass, and location in the atom.
  4. Fill in the data table:
  5. Element or Ion Name

    Element or Ion Symbol

    Atomic Number

    Atomic Mass

    # of p+

    # of e-

    # of no

    charge

    Calcium ion

                 
       

    6

    13

           

    Sulfide ion

                 
           

    50

         
     

    Fe+3

               
  6. What was the difference between the atom as described by Thomson, Rutherford, Bohr, and the quantum mechanical model?
  7. List the four types of sublevels (regions of space) that an electron can occupy. State how many orbitals are in each sublevel and how many electrons can occupy that sublevel.
  8. Write electron configurations for the following elements:
    a) Na   b) Kr   c) Ta
  9. Draw the Lewis dot diagram for each element in question #8
  10. Chemical Formulas
  11. Identify each of the following as metals, nonmetals, or metalloids.
    a) sodium   b) carbon   c) radium   d) silicon   e) xenon
  12. Name four types of bonds/forces ?
  13. Explain how phosphorus forms a -3 anion. Name the ion.
  14. What is the difference between a molecular compound and an ionic compound?
  15. Write formulas for the following compounds. State whether they are molecular or ionic.
    a) calcium iodide   b) phosphorus pentachloride   c) ammonium sulfide
    d) copper (I) hydrogen phosphite   e) dinitrogen pentoxide   f) tin (IV) oxalate
  16. Name the following compounds:
    a) KMnO4   b) SnCr2O7   c) S2O3   d) NaNO3   e) Pb(HCO3)4

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