Scenario:
   You are going to get 4 different substances and you need to be 
    able to uncover which ones contain covalent bonds and which 
    ones contain ionic bonds. 
   Problem Question:
   Which of the substances contains covalent bonds and which 
    ones contain ionic bonds.
   Hypothesis:
   Write a PREDICTION that explains what substance will show 
    which bond type each contains. You will need to have a 
    separate hypothesis for each substance.
   
    Substance 1 – Vegetable Oil
   
    Substance 2 – Salt
   
    Substance 3 – Sugar
   
    Substance 4 – Baking Soda
    Materials
    
     Substance 1 – Vegetable Oil
    
     Substance 2 – Salt
    
     Substance 3 – Sugar
    
     Substance 4 – Baking Soda
    
     400 mL beaker
    
     4 test tubes
    
     Hot plate
    
     Spoon
    
     Stop Watch
    
     100 mL graduated cylinder
    
     Room Temperature tap water
    
     Goggles
    Procedure 
   Melting Point
   1. Begin by gathering 4 test tubes, a 400 mL 
    beaker and a hot plate.
   2. Place the substances in each of the 
    designated test tubes. (ex. Substance 1 in 
    test tube #1)
   3. Turn the Hot Plate on to high.
   4. Place all 4 test tubes into the beaker and 
    place the beaker on the hot plate.
   5. Watch and record when each of the 
    substances melts.  
    Procedure
   Dissolving in Water
   1. Begin by gathering a spoon, a 100 mL 
     graduated cylinder and a 400 mL beaker.
   2. In the beaker, have the teacher pour in 
     substance #1.
   3. Fill the graduated cylinder up to 100 mL with tap 
     water and then pour it into the beaker.
   4.  Begin stirring the solution in the beaker for 30 
     seconds and then let it sit for 30 seconds. 
     Record if it dissolves or not.
   5. Repeat steps 1 – 4 with the remaining 
     substances.
        Ionic and Covalent Properties 
        Table
                                                    Ionic Compounds                     Covalent Compounds
       Property: Melting point                High Melting Point                    Low Melting Point
       Test: Apply heat                       Result: Won’t melt at low             Result: Will melt at low 
                                              heat                                  heat
       Property: Dissolve in water            Will dissolve in water                Will not dissolve in water
       Test: Put in water                     Result: Will “disappear” in           Result: will NOT 
                                              water                                 “disappear” in water
       Property: Crystal formation            Will form crystals                    Usually do not form crystals.
       Test: ??
       Property: Conduct electricity          Will conduct electricity IF melted or  Will never conduct electricity
       Test: ??                               dissolved in water