Semimetal: meaning, definitions and examples
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semimetal
[sɛmɪˈmɛtəl ]
Definition
Context #1 | Noun
materials science
A semimetal is a substance that has properties intermediate between those of metals and non-metals. They typically exhibit metallic conductivity but have a non-metallic character in some reactions. Examples of semimetals include arsenic and antimony.
Synonyms
metalloid, semi-metallic element.
Examples of usage
- Arsenic is classified as a semimetal due to its unique properties.
- The addition of a semimetal can enhance the electronic properties of a composite material.
- In the periodic table, semimetals are found along the dividing line between metals and nonmetals.
Interesting Facts
Etymology
- The term 'semimetal' combines 'semi', meaning 'half', with 'metal', highlighting its mixed properties.
- The concept emerged in the early 19th century as chemists began to classify elements more systematically.
Science
- Semimetals, like arsenic and antimony, have unique electrical properties, making them useful in semiconductors for electronics.
- They can conduct electricity partially, which is key for devices like diodes and transistors.
Pop Culture
- In popular culture, materials from semimetals are used in technologies we rely on, like smartphones and computers.
- Movies and shows often feature advanced technologies that utilize these unique elements to create powerful gadgets.
Historical Context
- The discovery of semimetals played a crucial role in the development of the field of solid-state physics.
- Semimetals contributed to advancements in modern technology, including the development of the first computer chips.
Environmental Impact
- Some semimetals, like tellurium, are studied for their potential in sustainable energy technologies, such as solar panels.
- The mining of semimetallic elements can have significant environmental consequences, prompting discussions about eco-friendliness.