Magnesium (Mg) has an atomic number of 12 and an atomic mass of 24. It has 12 protons‚ 12 neutrons (varies with isotopes)‚ and 12 electrons (if it has no charge). Magnesium has a boiling point of 1363 K (1091 C/1944 F) and a melting point of 923 K (650 C/1202 F). At room temperature magnesium is solid. You can buy magnesium for $0.83 per lb. Magnesium is a metal and belongs to the alkaline-earth metal family. Magnesium was named after the city of Magnesia; it was discovered by Bussy in 1828 A.D.
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Nitrogen Family (The traditional name for the elements in Nitrogen’s column‚ the “pnictogens”‚ comes from a Greek word for “choking” or “strangling”) P.7 Nitrogen: Fritz Haber discovered how to convert the Nitrogen in the air into an industrial product. Although nitrogen gas can suffocate those who are unsuspecting‚ tends to be benign‚ almost to the point of uselessness. The one important thing it can do is replenish the soil; it is as important to plants as vitamin c is to us. When pitcher
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Metals Iraj Malik 12/10/2012 MYP-5 The International School A metal is defined as a chemical element that is malleable and ductile‚ usually solid‚ has a characteristic luster‚ and is a good conductor of heat and electricity‚ e.g. copper or iron. Metals form oxides that are basic‚ they are good reducing agents and metals have lower electro negatives.There are many properties of metals. The chemical properties are that they can combine together with other metals to form am alloy. The mechanical
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an easy process. People have to use cyanide or some other harmful chemicals to acquire gold. Also after this process very harmful toxic wastes are occurred. Thus gold mining has drastic effects on water‚ earth and air. Firstly‚ gold mining can has devastating effect on water because of leaked chemicals. Cyanide and some heavy metals are used in process of gold mining. If gold mine leaks cyanide or other heavy metals‚ these chemicals can react with water and produce acidic water. Fishes and water plants
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Introduction: Discovered in the early 1500s by an alchemist by the name of Paracelsus‚ then observed and recorded by Robert Boyle and later Henry Cavendish‚ hydrogen is the most abundant element on earth and is an essential element for life. This element makes up about 90% of all atoms‚ the most popular being water. Today‚ it is seen as the clean fuel of the future‚ is used in products such as fertilizer‚ and it helps aid in the production of plastics‚ pharmaceuticals‚ and even margarine. Also
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Copper is the 29th element in the periodic table‚ located more specifically at group 11‚ period 4. Because of its chemical and physical attributes‚ it is a transition metal‚ which denotes high boiling and melting points. Both a conductor of heat and electricity‚ Copper is ductile and malleable. Its symbol “Cu” derives from the Latin cuprum. Copper is also valued for its two-for-one practicality: it is a vital nutrient that has antibacterial properties. Aside from what many people generally know about
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A chemical that is used every day by almost every person around the world is ethylene glycol. Many people know this chemical by its common name of antifreeze‚ but it is also used as a solvent and in hydraulic brake fluids. This liquid chemical is clear and colorless with primary threats to the environment through penetrations of soil and groundwater systems. Ethylene glycol can also cause acute and chronic health problems if exposed to. (Ethylene Glycol) There are three main routes of exposure
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Essay about HSE Management system. Element 1. Leadership and Commitment This HSEMS element addresses the top-down leadership and commitment to create the company culture necessary for success in the systematic management of HSE. Basic Requirements Management and supervision (at all levels) shall be regarded as being fully committed to HSE by all staff and contractors. They are to be seen as providing a leading role towards constant improvement through leadership their behaviours and action
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Artem Ilyayev Ap Bio 1) An element is to a(n) ___________ as an organ is to a(n) _______________ Answer - b - compound; organism 2) In the term trace element‚ the modifier trace means Answer - a - the element is required in very small amounts. 3) Compared to 31P‚ the radioactive isotope 32P has Answer - b - one more neutron 4) Atoms can be represented by simply listing the number of protons‚ neutrons‚ and electrons - for example‚ 2P+; 2n0; 2e- for helium. Which atom represents the 18O isotope
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The Atomic Mass of Metallo You may have noticed on the periodic table that the atomic mass of an element is usually not a whole number. That happens because of isotopes. An atom that is missing a neutron or has an extra neutron is called an isotope. They are still the same element; however‚ they are just a little different from every other atom of the same element. Most of the carbon atoms in the universe are Carbon-12‚ with 6 neutrons. A small percentage of carbon atoms are Carbon-13‚ with
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