Materials:
15 wood splints
4 large test tubes
2 400 ml beakers
2 pieces of glass tubing bent at 90 degrees
2 test tube stoppers with no holes
2-holed test tube stopper
single holed test tube stopper
glycerin (C₃H₈O₃)
propane tank
1 meter rubber tubing
bucket
safety goggles
stand for test tube
Caution: Be careful around an open flame.  Do not point the propane tank or test tubes at anybody.

Procedure:

1. Fill one of the test tubes with the splints.  If they are too long, use scissors to shorten them.  Close tube with single holed stopper.  Use stand to hold vertically.
2. Fill beaker with cold water.
3. Place 2-holed stopper in a test tube.  Insert a piece of glass tubing in each hole.  Insert the other end of one of the pieces of tubing in hole of single holed stopper.
4. Place test tube with the 2-holed stopper in beaker of cold water.
5. Light propane tank and heat test tube strongly.  CAUTION: Be careful when working with a flame.  Do not point flame at anyone.
6. Light wood splint and test if gas from wood is flammable.  Turn off propane tank.
7. Attach rubber tube to end of glass tube that gas one open end.
8. Fill bucket with water.
9. Place other end of rubber tube in beaker.  Place beaker underwater in bucket and let it fill.  Place upside down in bucket.
10. When beaker is filled with gas disconnect rubber tube and relight gas from test tube and keep burning as long as possible.

1. What happens when you first heat the wood splints?  It forms a gas
2. Will the gas burn? Yes
3. Does heating the gas produce one or more liquids?  Yes, it forms two liquids.