can cesium melt in your hand?
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Cesium is one of three metals (gallium and mercury) that are liquid at or near room temperature. Cesium is a very reactive metal, that when mixed with cold water, produces an explosive reaction. Its melting point is so low that it will melt if it is held in the hand.
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This extreme cold makes the solid dangerous to handle without protection due to burns caused by freezing (frostbite). While generally not very toxic, the outgassing from it can cause hypercapnia (abnormally elevated carbon dioxide levels in the blood) due to buildup in confined locations.
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You don't actually "touch" anything at any level. When we "touch" something, the atoms of our fingertips approach the atoms of the surface we're "touching", at which point atomic forces prevent any closer proximity. The resistance we feel is actually mutual atomic repulsion from a distance.
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Metals tend to be strong and conductive, and have high melting points. However, like nonmetals, their forms occur as a distinct combination of electrons, protons and neutrons. All elements, metal or otherwise, can change state or react.
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The melting points of the alkali metals as a group are lower than those of any other nongaseous group of the periodic table, ranging between 179 °C (354 °F) for lithium and 28.5 °C (83.3 °F) for cesium. Among the metallic elements, only mercury has a lower melting point (−38.9 °C, or −38.02 °F) than cesium.
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The big danger is arcing and that happens with pointy things like forks and apparently grapes. ... With a fork there's a small enough spark gap for current to jump. With a spoon, there is not. However, metal also has a shielding effect, and the USDA even says it's safe to use small quantities of foil in a microwave.
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Yttrium has a bright, silvery surface, like most other metals. It is also prepared as a dark gray to black powder with little shine. Yttrium has a melting point of 1,509°C (2,748°F) and a boiling point of about 3,000°C (5,400 F). Its density is 4.47 grams per cubic centimeter.
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Lithium is a very soft, silvery metal. It has a melting point of 180.54°C (356.97°F) and a boiling point of about 1,335°C (2,435°F). Its density is 0.534 grams per cubic centimeter. By comparison, the density of water is 1.000 grams per cubic centimeter.
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Under normal processing conditions, this product contains no toxic chemicals.” However, you also read that, “fumes produced during the melting processing, may cause eye, skin, and respiratory tract irritation, and if overexposed, could cause nausea and headache.”
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Well, technically speaking​, you can't actually touch anything. This is because the electrons in the atoms that make up your finger and that of the object you're trying to touch repel each other (according to the basic law of electrostatics).
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It's important to never touch a strong alkali with your hands; you'll just end up burning yourself! The alkali will even burn through gloves.
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We can't touch anything but can feel it. When we press something soft, it will bend or dent, but we cannot go beyond the force between our skin and the object we touch. ... Two particles can never touch because of a force between them. Always an amount of space will remain between two particles as long as they don't merge.
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You should always wear gloves and eye protection when handling strong rare-earth magnets. Elemental boron and the borates are not considered to be toxic, and they do not require special care in handling. ... Little is known of the toxicity of samarium; therefore, it should be handled carefully.
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As with all metals, the alkali metals are malleable, ductile, and are good conductors of heat and electricity. The alkali metals are softer than most other metals. Cesium and francium are the most reactive elements in this group. Alkali metals can explode if they are exposed to water.
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Of all metals in pure form, tungsten has the highest melting point (3,422 °C, 6,192 °F), lowest vapor pressure (at temperatures above 1,650 °C, 3,000 °F), and the highest tensile strength.
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Physical properties Yttrium has a bright, silvery surface, like most other metals. It is also prepared as a dark gray to black powder with little shine. Yttrium has a melting point of 1,509°C (2,748°F) and a boiling point of about 3,000°C (5,400 F). Its density is 4.47 grams per cubic centimeter.
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Yes, no matter how hard you try with the power of an oven, a microwave or the sun; a flake won't melt. Although a Flake is made from milk chocolate, the way it's made means that it's composed slightly differently to other chocolate bars.