Is rust a mixture? Is pig iron alloy?
A mixture is a mixture of two or more substances. A mixture has no fixed chemical formula, has no fixed composition and properties, and does not undergo chemical reactions between components of the mixture, keeping them in their original nature. Mixtures can be separated by physical means. Not formed by chemical synthesis.
Pig iron is an alloy of iron and carbon. An alloy is a metal element and one or several other elements (metals or nonmetals) that are fused to form a material with metallic properties.
Rust is a mixture whose main components are Fe2O3 and Fe (OH) 3, which is not decomposed (i.e., Fe2O3 = 3H2O).
