Chemistry Lab Handout 09   "Production of Nonmetals"

Your Name:    ___________________________________ Role:______________

Lab Partners: ________________Role:_____   ________________Role:_____

Problem:  What are the physical and chemical properties of hydrogen and      oxygen gasses?

Hypothesis:   _______________________________________________________

     _________________________________________________________________

     _________________________________________________________________

Materials:                   25 mL grad. cylinder     distilled water
     medium test tube        test tube rack           Calcium metal
     scoopula                watch glass              clock
     wood splint             matches
     Hydrogen Peroxide       Manganese(IV) Oxide      goggles

Caution: 

Procedure: Part A: Production of Hydrogen Gas
1. Obtain goggles and wear them for the entire lab!
2. Pour 5 mL of distilled water into a medium test tube.
3. Stand the test tube in a test tube rack.
4. Add three small pieces of Calcium metal to the distilled water,
     using a scoopula, not your hands.
5. Cover the test tube with a watch glass to collect the escaping gas.       Collect the gas for three minutes. Record your observations.
6. Light a wood splint, remove the watch glass and immediately bring
     the lit wood splint to the mouth of the test tube. Record your
     observations.

Procedure: Part B: Production of Oxygen Gas
1. Pour 5 mL of Hydrogen Peroxide into a medium test tube.
2. Stand the test tube in a test tube rack.
3. Add five small pieces of Manganese(IV) Oxide to the Hydrogen      Peroxide, using a scoopula, not your hands.
4. Cover the test tube with a watch glass to collect the escaping gas.       Collect the gas for five minutes. Record your observations.
5. Light a wood splint, blow out the flame, remove the watch glass and      insert the glowing end of the wood splint into the upper half of      the tube. Record your observations.

Observations:
     Reaction of Calcium and water:

     Result of flaming wood splint at the mouth of the test tube:

     Reaction of Manganese (IV) Oxide and Hydrogen Peroxide:

     Result of glowing wood splint in the upper half of the test tube:

Data: (none)

Diagram:

Conclusion:   _______________________________________________________

     _________________________________________________________________

     _________________________________________________________________

Questions:

1. What physical properties do the two nonmetals have in common?
2. Describe the wood splint test for the presence of hydrogen gas (H₂).
3. Describe the wood splint test for the presence of oxygen gas (O₂).
4. Which side of the staircase, on the periodic table, are the nonmetal      elements found on?

Answers: