A chemical property of iron is described by its ability to undergo a chemical change. Specifically, "Iron reacts with nitric acid" is the correct statement reflecting a chemical property, as this reaction alters iron's chemical identity.
Chemical Property of Iron
The statement that describes a chemical property of iron is "Iron reacts with nitric acid." A chemical property is observed when a substance undergoes a chemical change. For iron, one such property is its reaction with nitric acid, which is a chemical process that changes the identity of the substance, indicating its chemical reactivity. In contrast, the other properties listed - malleability, electrical conductivity, and high melting point - are physical properties because they describe the substance without altering its chemical composition.
Iron's ability to react with various substances is a key chemical property used in identifying how it will interact with its environment. For example, the reaction of iron with oxygen, leading to corrosion or rusting, is another well-known chemical property of iron.