Sulfide
Sulfide
Sulfide (pronounced: /ˈsʌlfaɪd/) is a chemical compound that contains the sulfur anion. The term is also used more broadly to describe substances that contain sulfur in a negative oxidation state.
Etymology
The term "sulfide" comes from the Latin word "sulphur", which means "brimstone". The "-ide" suffix is derived from the Greek word "eidos", meaning form or type, and is commonly used in chemistry to denote binary compounds.
Chemical Properties
Sulfides are typically formed when sulfur combines with a metal or a nonmetal element. They are characterized by their strong odors, which are often associated with rotten eggs. This is due to the presence of hydrogen sulfide, a common and naturally occurring sulfide.
Types of Sulfides
There are several types of sulfides, including:
- Metallic sulfides: These are compounds that contain one or more metal atoms and sulfur. Examples include iron sulfide (FeS) and copper sulfide (CuS).
- Nonmetallic sulfides: These are compounds that contain nonmetal elements and sulfur. Examples include hydrogen sulfide (H2S) and carbon disulfide (CS2).
- Organic sulfides: These are compounds that contain carbon, hydrogen, and sulfur. They are often found in petroleum and natural gas.
Health Effects
Exposure to certain sulfides, such as hydrogen sulfide, can be harmful to human health. Symptoms of exposure can include eye irritation, respiratory problems, and in severe cases, loss of consciousness or death. However, not all sulfides are harmful, and some are even essential for life. For example, some bacteria use sulfides as a source of energy.
Related Terms
- Sulfate: A compound containing the sulfate ion (SO4^2-).
- Sulfite: A compound containing the sulfite ion (SO3^2-).
- Sulfur: A chemical element with the symbol S and atomic number 16.
External links
- Medical encyclopedia article on Sulfide
- Wikipedia's article - Sulfide
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