Question

Which of the following demonstrates a chemical change?(1 point) Responses iron (Fe) reacting to water((H2O) ) and oxygen(O) to form iron oxide(Fe2O3 ) iron (Fe) reacting to water(open paren cap h sub 2 cap o close paren) and oxygen(O) to form iron oxide(cap f e sub 2 cap o sub 3) dry ice vaporizing dry ice vaporizing steam condensing on a mirror steam condensing on a mirror sugar and water mixing to create sugar water

Answer 1

The example that demonstrates a chemical change is:

Iron (Fe) reacting to water (H2O) and oxygen (O) to form iron oxide (Fe2O3).

This process involves a chemical reaction where iron reacts with water and oxygen to create a new substance, iron oxide, which is a sign of a chemical change.

The other options involve physical changes (like vaporizing or condensing) or a mixture (sugar and water) that do not result in the formation of a new substance.