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Mercury (element) print that page


float valves , some electrical switches, and other scientific apparatus, though concerns about the element 's toxicity have led to mercury thermometers and sphygmomanometers being largely phased out in clinical environments in favor of alcohol -filled, digital, or thermistor -based instruments

Chemical element print that page


A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number , which is the number of protons in its nucleus . [ 1 ] Familiar examples of elements include gold , iron , copper , carbon , silicon , mercury , sodium , calcium , hydrogen

Mercury-in-glass thermometer print that page


A mercury-in-glass thermometer , also known as a mercury thermometer , was invented by German physicist Daniel Gabriel Fahrenheit in 1724 and is a thermometer consisting of mercury in a glass tube. Calibrated marks on the tube allow the temperature to be read by the length of the mercury

Classical element print that page


the Chinese Wu Xing , are now understood more figuratively. Contents 1 Ancient classic element systems 1.1 Classical elements in Babylonia 1.2 Classical elements in Greece 1.3 Classical elements in Egypt 1.4 Classical elements in India 1.4.1 Classical elements in Hinduism

Element collecting print that page


Different collectors have different philosophies in collecting elements. Some collectors attempt to collect very high purity samples of each element . Others prefer to find the element in every day use. Some are averse to collecting the element as a compound or alloy, while other find this

Group 12 element print that page


A group 12 element is one of the elements in group 12 ( IUPAC style) in the periodic table . This includes zinc ( Zn ), cadmium ( Cd ) and mercury ( Hg ). [ 1 ] [ 2 ] [ 3 ] The further inclusion of copernicium ( Cn ) in group 12 is supported by recent experiments on individual Cn

Metalloid print that page

The terms amphoteric element , [ 11 ] [ 12 ] half-metal, [ 13 ] [ 14 ] half-way element , [ 15 ] near metal, [ 16 ] semiconductor [ 17 ] and semimetal [ 18 ] are sometimes used synonymously however most of these terms have other meanings, which may not be interchangeable: 'amphoteric | 2011/9/28 4:20:27

Transition metal print that page


The term transition metal (sometimes also called a transition element ) has two possible meanings: The IUPAC definition [ 1 ] states that a transition metal is "an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell." Group

Group 3 element print that page


other similar properties. They all are silvery-white metals under standard conditions. The fourth element , either actinium or lawrencium, has only radioactive isotopes . Actinium, which occurs only in trace amounts , continues the trend in chemical behavior for metals that form tripositive

Mercury-Containing and Rechargeable Battery Management Act print that page

edit ] See also Got Mercury? , a United States public awareness campaign about levels of the element mercury in seafood Mercury poisoning , a disease caused by exposure to the element mercury or its toxic compounds Mercury vacuum , a vacuum cleaner specifically designed to collect spills | 2011/8/6 13:58:36