Hematite is a naturally occurring mineral and a common form of iron ore. The following statements describe physical and chemical changes occurring to hematite. Which statement describes a chemical change?

Chemical change, all matter is made up of tiny particles we call atoms or molecules. Properties related to the atomic or molecular structures of substances are called chemical properties. Properties such as burning, rotting, rusting, compounding are chemical properties.

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while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.