Zinc

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by 11ccarter
Last updated 6 years ago

Discipline:
Science
Subject:
Chemical Elements
Grade:
9

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Zinc

Zinc was discovered in the year 1746 by Andreas Marggraf a German chemist. The element zinc was discovered in Germany. Zinc compounds were used for healing wounds and sore eyes before zinc was discovered. Before zinc was discovered in the metallic form, its ores were used for making brass. Before its dicovery in Europe, zinc was known in India in 1374 and was used to make brass. In the 17th century, zinc manufacturing occurred in China and served the purpose of providing the needs of the brass industry. The melting point of zinc is 419.5 degrees Celcius (787.1 degrees Fahrenheit) The boiling point of zinc is 907 degrees Celcius (1664.6 degrees Fahrenheit). Zinc is in the state of solid form at room temperature. The colour of zinc is grey with a bluish tinge. Zinc is a fair conductor of electricity. Zinc is a fair conductor of heat because of its low melting point. The density of zinc is 7.134g/cm^3. Zinc is relatively heavy which means it will sink in water. Zinc repels to other metals. Zinc is not magnetic but it can become slightly magnetic if it is put in a very strong magnetic field. At room temperature, zinc is neither ductile nor is it malleable. Zinc is hard and brittle at most temperatures but becomes ductile between 212-302 degrees Farenheight. Zinc becomes malleable at 100 degrees Celcius - 150 degrees Celcius. Above 210 degrees Celcius, zinc becomes brittle again. Zinc reacts with steam to give zinc oxide and hydrogen gas. Zinc does not react with cold water. When zinc reacts with moist air, zinc metal will tarnish. Zinc reacts with both acids, alkalis, and other non-metals. Zinc does not easily react with oxygen. Zinc burns in air with a bright-green flame, releasing fumes of zinc oxide. The symbol of zinc is Zn. Zinc belongs to the transition metal family. The atomic number of zinc is 30. Zinc has 35 neutrons. Zinc has 30 electrons and 30 protrons. Close to 12 million tons of zinc are produced per year worldwide. Around 58% of zinc is used for galvanizing to protect steel from corrosion. Nearly 14% is used in the production of zinc base alloys, primarily to supply the die casting industry. Finally, 10% of this zinc is used to produce brass and bronze. Zinc is applied in areas such as: construction, transport, consumer goods, and electrical appliances, general engineering , and automotive. In the home, zinc and copper are combined with other metals to form materials used in electrical components and household fixtures. In terms of health, zinc is very important to humans, animals, and plants. Zinc promotes proper growth and development of humans, animals, and plants. In order for the adult human body to be healthy, between 2 and 3 grams of zinc are needed for the body's enzymes and immune system to work appropriately. Zinc holds anti-oxidant properties, which fights against premature aging of the skin and muscles. When humans get too little zinc, they can encounter loss of appetite, decreased sense of taste and smell, slow wound healing and skin sores. About 80% of zinc mines are found underground, around 8% are of the open pit kind and, and the rest are a combination of both. The largest zinc mine is Rampura Agucha Mine in Rajasthan, India. Australia, Canada, China, Peru, and the U.S.A. are the largest zinc producers. Worldwide, more than 50 countries mine zinc ore. During this decade, some mines will be closing due to the fact of depletion. Brunswick Mine in Canada will be close to closure. The methods of mining zinc from underground mines include conventional blasting, drilling, and hauling techniques. Zinc can also be produced by a process called froth flotation, which involves agitating a special mixture to "float" the zinc to the surface. The smelting process can be used to melt ore into its elemental components. Zinc is not considered to be a harmful element. In low amounts, zinc is a crucial element in pland and animal life. On the other hand, eating, drinking, and being exposed to too much zinc can lead to negative health effects such as anemia, nervous system disorders, and damage to the pancreas. Fun Facts:1. Zinc aids in helping to save iron ore and energy. 2. Many rocks and many minerals contain zinc. 3. Zinc is an essential element for all a life, from human to the tiniest micro-organism.4. Extraction and refining of zinc started in Europe during the late 18th century. 5. Zinc is a recyclable material. Around 30% of the world's zinc supply comes from recycled zinc. 6. The highes levels of zinc can be found in the muscles, liver, kidneys, and bones.7. The 25th most abundant element is found in nature. 8. Zinc can be found in the air, soil, and water. 9. Zinc is part of the Earth's crust.10. Zinc oxide can be found in cosmetics, soap, toothpaste, and pharmaceuticals.11. Zinc is presently the 4th most widely used metal in the world. 12. Zinc oxide creams can protect against sunburn. 13. A zinc supplement can help with fighting a cold. 14. Zinc is found in Earth's seawater (thirty parts per billion).To learn more about the element zinc, and all it has to offer, log on to www.funtrivia.com,and play an interactive learning game.To watch many exciting experiments performed with zinc, please log on to www.Youtube.com, and watch the following videos:1. Zinc Periodic Table of Videos2. Zinc and sulfur-Periodic Table of Videos3. Make a Zinc Air - Battery 4. Galvanic cell with zinc and copper5. Reaction of zinc with hydrochloric acid.

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