Turn on the gas. The gas first flows over the oxide, and then flows out through the Bunsen burner. Wait 15 seconds. Light the gas. When the reaction is complete, remove the burner, and allow the reaction test tube to cool while the gas burns in the Bunsen burner.
Hot glassware can cause burns.
Bending glassware and inserting glass tubing through rubber stoppers can lead to severe cuts. Go to Top Precautions Use a safety shield. Ignite escaping gas after a 15 second wait. Do not use plastic coated clamps. Use a lubricant such as glycerin on the glass and the stopper.