Carbide
Carbide
Carbide (pronounced: /ˈkɑːrbaɪd/) is a compound composed of carbon and a less electronegative element. Carbides can be generally classified by the chemical bonds type as follows: salt-like, covalent compounds, interstitial compounds, and "intermediate" transition metal carbides.
Etymology
The term "carbide" is derived from the Latin word carbo, meaning "charcoal". It was first used in the 19th century when it was discovered that carbon could form compounds with metals.
Types of Carbides
There are three types of carbides, defined by the type of chemical bond involved in their structure:
- Salt-like carbides: These are formed by metals of group 1 and 2 and include compounds like aluminium carbide and beryllium carbide.
- Covalent carbides: These are formed by elements of group 4 (like silicon and germanium) and include compounds like silicon carbide and boron carbide.
- Interstitial carbides: These are formed by transition metals and include compounds like tungsten carbide and titanium carbide.
Related Terms
- Carbon: The chemical element of atomic number 6, a nonmetal that has two main forms (diamond and graphite) and that also occurs in impure form in charcoal, soot, and coal.
- Chemical bond: A lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.
- Transition metals: Any of the set of metallic elements occupying a central block in the periodic table.
- Covalent bond: A chemical bond that involves the sharing of electron pairs between atoms.
External links
- Medical encyclopedia article on Carbide
- Wikipedia's article - Carbide
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