First Biochem Quiz

  1. What is an atom?
  2. What is an atomic number?_____________________________________________
  3. What is mass number? ________________________________________________
  4. What are isotopes?
  5. Describe the number of protons and electrons in a neutral atom.__________________________
  6. Complete the table for each of the sub-atomic particles:
    Name Symbol Location Charge Mass


          almost nothing
  7. Draw Lewis diagrams for:
    hydrogen sodium carbon oxygen




  8. Complete the following table.
    Name Chemical Formula Ball & stick model Structural formula
    water H2O

    methane CH4

    carbon dioxide CO2