Question

which of the following demonstrates a chemical change? (1 point) iron (fe) reacting to water((h2o)) and oxygen(o) to form iron oxide(fe2o3) dry ice vaporizing steam condensing on a mirror sugar and water mixing to create sugar water

Explanation:

A chemical change results in the formation of new substances with different chemical properties. Iron reacting with water and oxygen to form iron oxide is a chemical reaction as new chemical bonds are formed and a new compound (iron oxide) is created. Dry - ice vaporizing is a physical change from solid to gas. Steam condensing on a mirror is a physical change from gas to liquid. Sugar and water mixing is a physical change as no new chemical substances are formed, just a mixture.

Answer:

iron (Fe) reacting to water(($H_2O$)) and oxygen(O) to form iron oxide($Fe_2O_3$)