Determining Bond Type of Unknown Substances

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Determining Bond Type of Unknown Substances

(Molecular or Ionic)

Purpose:

     The purpose of this lab was to determine the type of bonding in some unknown substances based on their physical properties.        

Table of Properties:

Procedure:

  • Test one: Hardness
  • Test two: Dissolve in water and see if it conducts electricity
  • Test three: Heat up to see how fast it will melt or boil
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  1. Carefully read the directions first
  2. Gather Materials

– Test tubes, several unknown compounds, conductivity testers, oil, wooden stirring sticks, water, Bunsen burner, test tube racks, goggles.

  1. Put on Safety Equipment (goggles)
  2. Perform Test One by pressing compounds to see how hard/soft it is
  3. List Observations
  4. Perform Test Two by getting 4 cups of 20 mL of distilled water
  5. Measure out a small quantity of each substance
  6. Then put each substance into different cups of water
  7. Stir them out
  8. Test the conductivity of the compounds using the conductivity testers
  9. List Observations
  10. ...

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