Copper Rust

Copper

Copper is a chemical element; it has symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement.

Rust

Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3), and is typically associated with the corrosion of refined iron.

Copper (color)

Copper is a reddish brown color that resembles the metal copper. The first recorded use of copper as a color name in English was in 1594.

Rust (color)

Rust is a red color resembling iron oxide red. It is a commonly used color on cars and appears roughly the same color as photographic safelights when used over a standard tungsten light source.

copper

Noun

1. A reddish-brown metallic chemical element (symbol Cu) with the atomic number 29; also, the metal made up of this element.
2. The reddish-brown colour of copper (etymology 1, noun sense 1).

Adjective

1. Made of copper (etymology 1, noun sense 1).
2. Having the reddish-brown colour of copper.

rust

Noun

1. The deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).
2. A similar substance based on another metal.

Verb

1. To oxidize, especially of iron or steel.
2. To cause to oxidize.