Question

Which of the following demonstrates a chemical change?(1 point)
Responses

sugar and water mixing to create sugar water
sugar and water mixing to create sugar water

steam condensing on a mirror
steam condensing on a mirror

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

1 answer

The option 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 new substances (iron oxide) are formed, which is characteristic of a chemical change. The other options involve physical changes (mixing, condensing, and vaporizing) rather than a transformation that creates new substances.