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

Responses

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)

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

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 the formation of a new substance (iron oxide) and is indicative of a chemical reaction. The other options describe physical changes or state changes.

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