Metals and Non-metals Elements are divided mainly into two groups on the basis of physical and chemical properties – Metal and Non-metal. Metals: Part - I Physical Properties of Metals:- Hardness:- Most of the metals are hard‚ except alkali metals‚ such as sodium‚ potassium‚ lithium‚ etc. Sodium‚ potassium‚ lithium etc. are very soft metals‚ these can be cut using knife. Strength:- Most of the metals are strong and have high tensile strength. Because of this big structures are made using metals
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Demographic on AIDS/HIV Rhonda Speakman HCS 490 January 21‚ 2013 Jennifer Pharr Demographic on AIDS/HIV A number of people that affect our healthcare in the United States are pediatric patients‚ recurring sickness and individuals needing continuous medical care. However‚ none of the above health concerns indicated in the list includes patients with Acquired Immune Deficiency Syndrome/ Human Immunodeficiency Virus (AIDS/HIV). AIDS/HIV has affected millions in the United States.
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Heavy Rain Trying to rescue your own son from a serial killer by completing a set of painful‚ heart-wrenching trials‚ Heavy Rain was one of the most touching and depressing (and one of the greatest) video games I have ever played showing the true nature and consequences of people’s morality when their human reasoning is put to the test. "Human reason" generally refers to the human being’s capacity to use logic and make judgments related to knowledge and‚ depending on who you read‚ ethics. (Yahooansweres)
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ISSN: 2348 9510 International Journal Of Core Engineering & Management(IJCEM) Volume 1‚ Issue 3‚ June 2014 Heavy Metal Contamination In Solid Aerosols And Top Soils Of Faisalabad Enviornment Dr Muhammad Attique Khan Shahid1‚ Prof. Dr. Khadim Hussain2 and Mariam Saeed Awan1 1 Department of Physics GC University Faisalabad (Pakistan). 2 Department of Physics PU‚ Lahore (Pakistan) Abstract:The suspension of trace elements in the atmosphere as solid aerosols from natural and anthropogenic sources
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Metals Physical Properties of Metals versus Non-metals Properties | Electrical conductivity | Heat conductivity | Melting and Boiling points | Malleability & ductility | Lustre | Metals | Good | Good | High | High | Shiny | Non-metals | Poor | Poor | Low | Low (Brittle) | Dull | Chemical Properties of Metals versus Non-Metals Properties | Metals | Non- metals | Reaction with oxygen | Form basic or amphoteric oxides | Form acidic or neutral oxides | Ionisation | Lose electrons
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extract a metal Industrial mineral- either has some direct practical use‚ or take part in some industrial process Gems and precious stones are an exception to industrial metals as they do have a direct ‘practical’ application but are dealt with separately. Some common minerals include: * * Silica- (silicon dioxide) most common mineral on earth * Calcite- (calcium carbonate) main mineral in limestone and marble Ore: A naturally occurring solid material from which a metal or valuable
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Metals & Non-Metals Metals: Good conductors of heat and electricity. Have shining luster. Malleable (this means that they can be hammered or distorted). Ductile (this means that they can be drawn into wires). Most have high melting and boiling points. Are sonorous (give out sound when beaten). Usually solid at room temperature. An exception to this is mercury‚ which is liquid in nature. Examples: Aluminum‚ Gold‚ Copper‚ Silver‚ Sodium‚ Potassium‚ Mercury. Corrode or oxidize in
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A heavy downpour caused a flash flood in Taman Perdana recently. Last week‚ there was a thunderstorm rained cats and dogs. The rain started in the morning and in three days continuously. The villagers have been worried about this rain. The water level in a nearby river rose to a dangerous level. Within a few minutes‚ the water overflowed the river banks and the housing area was flooded. Residents were worried as the water continued to rise. The residents were caught unaware as everything
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Ronald Smith 8/26/13 Period: 5 Creative Writing Heavy Rain There was one a man who went by the name of Ethan. Ethan had a certain genteel about him‚ which made it impossible to believe that he was a serial killer. He would go to the neighborhood park and secede himself from the other families‚ watching and waiting for the perfect moment to kidnap and kill a young girl or boy. The kidnappings were so quick and scrupulous that by the time the parents had noticed the child was missing it was too
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are often flushed out into the sea. The escalating accumulation of heavy metals is a hazard to life underwater and is amplifying the mortality rate of the fishes and other aquatic fauna. This buildup of waste in the waters not only affects the aquatic life but also mankind both directly and indirectly. Fish is considered as one of the main protein sources of food for humans. Water pollution leads to affecting fish with toxic metals resulting from different sources like accidental spillage of chemical
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