Is rusting a chemical change?


The formation of rust represents a chemical change. When a chemical change occurs, the substance or substances present at the beginning are no longer present at the end of the change. Once a chemical change occurs, it theoretically cannot be undone.

Conversely, when a physical change occurs, the material that is the subject of the physical alteration is unchanged. A physical change theoretically is capable of being undone. One example of this is melting an ice cube; once the ice cube melts, the material (water) remains the same and can be refrozen back into a solid. The rust that forms as the result of a chemical change, on the other hand, is a different type of material than the original object that underwent the transformation. A change has occurred at the atomic level that cannot be undone.

Q&A Related to "Is rusting a chemical change?"
Rusting is a redox reaction, short for oxidation-reduction.
Rust is an iron oxide with different properties than iron metal, so Rust makes
Because it is formed by turning Fe and O2 to iron oxide. You get a new substance you did not start with.
1. Get a pad of 000 or 0000 (Triple Ot, Quadruple Ot) steel wool. 2. Rip off a small portion of steel wool. 3. Wad the steel wool into a small ball. 4. Rub the rusted area vigorously
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2015