The option that demonstrates a chemical change is: iron reacting with oxygen and water to create rust (iron oxide). This process involves a chemical reaction that produces new substances (rust), which is a characteristic of chemical changes. The other options described either physical changes or phase changes of matter.
Which of the following demonstrates a chemical change?(1 point) Responses water freezing into ice water freezing into ice steam condensing on a mirror steam condensing on a mirror iron reacting with oxygen and water to create rust (iron oxide) iron reacting with oxygen and water to create rust (iron oxide) sugar and water mixing to create sugar water sugar and water mixing to create sugar water
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