Mrs. Scott did a demonstration for her class. She used tongs to hold a piece of steel wool in the flame of a Bunsen burner. The steel wool caught on fire and began to burn. Mrs. Scott removed the steel wool from the flame and allowed it to burn for 20 minutes.



Later, Mrs. Scott took a piece of the burned steel wool and held it in the flame of the Bunsen burner. It did not catch on fire.



Make a claim about whether the steel wool underwent a chemical reaction while burning. Support your claim with evidence from the demonstration.