what does it mean when something is metal?
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According to Urban Dictionary, the phrase is akin to saying that something is so metal, implying that it's “so hardcore that it can only be compared to metal (the music that is.)” Metal music actually comes from Birmingham, one of the world's first industrialized cities.
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Metals are dense, shiny, good conductors of heat and electricity, and easily lose electrons in chemical reactions. Nonmetals are not dense, dull, do not conduct heat and electricity, and tend to gain electrons. Metalloids are elements that have properties of both metals and nonmetals.
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In the elemental form, non-metals can be gas, liquid or solid. They aren't shiny (lustrous) and they don't conduct heat or electricity well. Usually their melting points are lower than for metals, although there are exceptions. The solids usually break easily, and can't bend like metals.
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Metals: Substances that are hard solid at room temperature (except mercury), shiny, malleable, ductile, and good conductor of heat and electricity.
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Aluminum is a soft and lightweight metal. It has a dull silvery appearance, because of a thin layer of oxidation that forms quickly when it is exposed to air. Aluminum is nontoxic (as the metal) nonmagnetic and non-sparking. Aluminum has only one naturally occurring isotope, aluminium-27, which is not radioactive.
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Take silicon (Si), for example. It's shiny and silver like a typical metal, but it is brittle and a poor conductor of electricity.
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In metallurgy, a non-ferrous metal is a metal, including alloys, that does not contain iron (ferrite) in appreciable amounts. ... Important non-ferrous metals include aluminium, copper, lead, nickel, tin, titanium and zinc, and alloys such as brass.
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Introduction. The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations. Examples of heavy metals include mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb).
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Aluminum is a metal. ... Aluminum differs from other common metals in that it is very strong for its weight. Although this is generally true, an aluminum part must usually be physically larger than a part made from a heavier metal to provide the same strength.
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It is characteristic of metals that they are malleable (can be hammered into sheets) and ductile (can be drawn into wires). A glance at the periodic table will show you that the majority of pure elements are metals. All metals except mercury are solids at room temperature.
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Now, considering the difference between their physical properties, metals are malleable, which means it can be beaten to thin sheets. ... While metals are good conductors of electricity and heat, non-metals are poor conductors. Unlike non-metals, metals are ductile, which means they can be stretched into wires.
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As nouns the difference between stone and metal is that stone is (uncountable) a hard earthen substance that can form large rocks while metal is (lb) chemical elements or alloys, and the mines where their ores come from .
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noun. a strong piece of timber, metal, or the like, set upright as a support, a point of attachment, a place for displaying notices, etc.
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Alloy, metallic substance composed of two or more elements, as either a compound or a solution. The components of alloys are ordinarily themselves metals, though carbon, a nonmetal, is an essential constituent of steel. Alloys are usually produced by melting the mixture of ingredients.
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Metal – This is a chemical element made up of various opaque, fusible, ductile and lustrous substances, with some of the most commonly used metals being titanium, copper and nickel. Steel – By contrast the metal, this is an alloy of iron that contains various amount of carbon content.
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Iron seems to be symbolic of power, probably because iron was deemed the strongest metal. For example, Jesus Christ is predicted to return at the end of time and rule “with an iron rod”: Out of his mouth came a sharp sword to strike the nations.
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Metals form bonds that are different from the ionic, covalent and molecular bonds you've learned about before. In metals bonds, the electrons move freely around in an electron sea, and this leads to metals' unique properties. Metal is shiny because it reflects incoming light photons.