For the experiment you will need an Erlenmeyer flask, a rubber stopper with a hole, copper coil tubing, a hot plate and a gas burner.
- Pour some water into the Erlenmeyer flask, close it by the rubber stopper with hole and place it on the hot plate.
- Insert the end of the copper tubing into the hole of the stopper.
- When the water boils, heat the tubing by the burner. The copper tubing should be heated to red-hot.
- Hold a match to the jet of steam coming out of the end of the tube. After a few seconds the match ignites.