scientific definition of metal
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A certain element is a gas at room temp. Therefore, it is most likely a metal, metalloid, nonmetal, or halogen? In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. The metals are one of the three groups of elements as distinguished by their ionization and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals.
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METAL (metalled, metalling) tin, Sn, atomic number 50 (noun). a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide. see more on Definitions.net ».
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METAL (metalled, metalling) metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.) Holonyms (Ra is a substance of...): uranium ore (any ore from which uranium can be extracted)
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Metalloid A metalloid is a chemical element with properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid, nor is there complete agreement as to which elements are appropriately classified as such.Despite this lack of specificity, the term remains in use in the literature of chemistry.here is no standard definition of a metalloid, nor is there complete agreement as to which elements are appropriately classified as such. Despite this lack of specificity, the term remains in use in the literature of chemistry.
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Silver Silver is a chemical element with symbol Ag (from the Latin argentum, derived from the Greek ἀργός: shiny or white) and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.
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- Definition of metal 1) An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table; about 80% of the known elements are metals. Was this definition helpful? Tweet
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Heavy Metals The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations. Heavy metals are natural components of the Earth's crust. They cannot be degraded or destroyed. To a small extent they enter our bodies via food, drinking water and air.
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copper a chemical element, atomic number 29, atomic weight 63.54, symbol Cu. See Table 6. It is necessary for bone formation and for the formation of blood because it occurs in several oxidative enzymes including one involved in the transformation of inorganic iron into hemoglobin. copper acetoarsenite.
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metal Noun. 1. type metal-an alloy of tin and lead and antimony used to make printing type. type slug, slug-a strip of type metal used for spacing. alloy, metal-a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten; brass is an alloy of zinc and copper.
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- metalloid definition: 1. nonmetal 2. an element having some of, but not all, the properties of metals, as arsenic or silicon 3. like a metal in appearance 4. of, or having the nature of, a metalloid...
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- A metal can refer to an element, compound, or alloy that is a good conductor of both electricity and heat. Example metals include gold, sodium, copper, iron, and many other elements. Metals are usually malleable, ductile, and shiny.
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silver A soft, shiny, white metallic element that is found in many ores, especially together with copper, lead, and zinc. It conducts heat and electricity better than any other metal. Silver is used in photography and in making electrical circuits and conductors.
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iron Chemistry. a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol: Fe; atomic weight: 55.847; atomic number: 26; specific gravity: 7.86 at 20°C. Compare cast iron, pig iron, steel, wrought iron.
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Metalloid A metalloid is a chemical element with properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid, nor is there complete agreement as to which elements are appropriately classified as such.oron, silicon, germanium, arsenic, antimony, and tellurium are recognised commonly as metalloids. Depending on the author, one or more from selenium, polonium, or astatine sometimes are added to the list. Boron sometimes is excluded, by itself, or with silicon. Sometimes tellurium is not regarded as a metalloid.
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METAL (metalled, metalling) a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry.
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Heavy Metals Heavy metal is a general collective term which applies to the group of metals and metalloids with an atomic density greater than 4 g/cm³. Although it is a loosely defined term (Duffus, 2002), it is widely recognised and usually applies to the widespread contaminants of terrestrial and freshwater ecosystems.
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- (Metallurgy) the scientific study of the extraction, refining, alloying, and fabrication of metals and of their structure and properties ˌmetalˈlurgic, ˌmetalˈlurgical adj ˌmetalˈlurgically adv
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Metalloid Metalloid is a term used in chemistry when classifying the chemical elements. On the basis of their general physical and chemical properties, nearly every element in the periodic table can be termed either a metal or a nonmetal-however a few elements with intermediate properties are referred to as metalloids.(In Greek metallon = metal and eidos = sort).ome allotropes of elements exhibit more pronounced metal, metalloid or non-metal behavior than others. For example, for the element carbon, its diamond allotrope is clearly non-metallic, however the graphite allotrope displays limited electric conductivity more characteristic of a metalloid.
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- A metalloid is a chemical element with properties in between, or that are a mixture of, those of metals and nonmetals.There is no standard definition of a metalloid, nor is there complete agreement as to which elements are appropriately classified as such.s a halogen, astatine tends to be classified as a nonmetal. It has some marked metallic properties and is sometimes instead classified as either a metalloid or (less often) as a metal. Immediately following its production in 1940, early investigators considered it a metal.
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NONMETAL Hypernyms (metal is a kind of...): chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter).
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- Metals are atoms that attach themselves to other atoms in a particular way. Metal atoms, because of how their electrons are arranged, lose their electrons easily. When they join up with other atoms to make molecules, metal atoms join together by exchanging electrons.Because metal atoms join other metal atoms in this special way, most metal is shiny, soft, and easy to bend.Most metals are also good conductors of electricity-that is, electrons move easily from one atom of metal to the next. (That's why we make electric wires out of copper).ecause metal atoms join other metal atoms in this special way, most metal is shiny, soft, and easy to bend. Most metals are also good conductors of electricity-that is, electrons move easily from one atom of metal to the next. (That's why we make electric wires out of copper).
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Metalloid Definition Metalloid Definition: an element with properties intermediate between those of a metal and nonmetal. Metalloids may also be defined according to their location on the Periodic Table.
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element element definition. In chemistry, any material (such as carbon, hydrogen, iron, or oxygen) that cannot be broken down into more fundamental substances. Each chemical element has a specific type of atom, and chemical compounds are created when atoms of different elements are bound together into molecules.
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- Definition of Metalloid. this term is no longer commonly used by chemists, however, it refers to elements that exhibit some properties of metals and nonmetals. These elements tend to be semiconductors. Silicon is an extremely important example of these elements.
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Metalloids The metalloids can thus be defined as those elements which exhibit characteristics of both metals and nonmetals. They are all solids, but not lustrous, and conduct heat and electricity moderately well. The six metalloids treated here are listed below, with the atomic number and chemical symbol of each. • 14.
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metal noun. Gold is an example of a metal. Gold is an example of a metal. The definition of metal is any of the elements with a positive electrical charge, typically with a shiny surface and a good conductor of heat. An example of metal is gold.