the periodic table of elements

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the periodic table of elements

Boron:Element Name: BoronAtomic Number: 5Element Symbol: BAtomic Mass: 10.81Group Number: 13Period Number: 2Description: Boron is a black and a very hard solid (9.3 on the mohs scale). It is not known to have a distinct smell.The name : Boron's name comes from the mineral borax.Discoverey: Boron was isolated partly in 1808 by chemists L.J.Thenard an Joseph L. Gay-Lussac by reacting magnesium with boric acid. They named it Bore becasue the propeties it shared with Phosphorus and Sulfur. Also in 1808, Sir Humphry Davy partly isolated Boron by taking a hydrogen atmosphere and reacting boric acid and potassium. William Weintraub isolated 99% Boron by limiting boron halides with hydrogen.Where it is found: Boron is found in sedimentary rocks or in volcanic spring waters. It is found in the United States, Turkey, Chile, and Argentina.Conductivity: It is not a good conductor of electricity unless it is heated up.Uses: Boron can be found in computers, cell phones, medical equipment, and motors. It is used to create a NIB magnet of Neodymium, Iron, Boron. Nuclear reactions are controlled by Boron. Boron is also used to make glassware.Boiling Point: 3727 degrees CelsiusMelting Point: 2075 degrees CelsiusDuctility/Conductivity: Boron is a poor conductor of electricity unless it is heated up.Luster/malleability: Boron is not malleability, but has a slight luster.Boron is an abundant resource that can be recycled by melting an object with boron. It is not expected to run out. Dalton's Law of Consevation of Matter says atoms of an element cannot be created,destroyed, or take the form of another element.

NitrogenAtomic Number: 7Element Symbol: NAtomic Mass: 14.01Group Number : 15Period Number: 2Description:Nitrogen has no color, smell, or taste because it is a gas.The name: Nitrogen gets its name from being part of nitre modern day potassium nitrate.Discoverey: Daniel Rutherford in 1772, in Scotland discovered "noxious air" modern day nitrogen. He took oxygen and carbon dioxide out of air. The gas left he noticed it was insoluble in water and held no life. Rutherford did have help because he built off of his teacher, Joseph Black's work. Carl Scheele discovered Nitrogen similarly in 1772 and noted that it made up around two thirds of air. He did not publish his results until 1777.Boiling Point: -195.8 degrees CelsiusMelting Point: -201.1 degrees CelsiusNitrogen has no luster, and is not malleable, and is not a conductor of electricity.Nitrogen is an abundant resource that can be reused, and it won't run out.

AluminumAtomic number: 13Element Symbol: AlAtomic Mass: 26.98Group Number: 13Period Number: 3Description: A silver metal that is not magnetic, it doesn't have a distinct smell, it is a smooth metal.The name: Aluminum was named after the mineral aluminaDiscovery: Hans Christian Oersted isolated non pure aluminum in 1825 in Copenhagen, Denmark He did this by using a potassium-mercury amalgam to reduce aluminum chloride.Fredrich Woehler was the first to isolate aluminium completely in 1827.He successfully isolated aluminum by createing a reaction with volatalized aluminum trichloride and potassium creating aluminum. Other attempts were made before him like Humphry Davy in 1808 he create an alloy of aluminum and iron.Uses: Aluminum is used to make boats, planes, soda cans, foil, power lines, and more.Boiling Point: 2466.85 degrees CelsuisMelting Point: 660.32 degrees CelsuisAluminum is has a strong luster, it is a great conductor of electricity, and is very malleable.Aluminum is a very abundant resource in the the earth's crust, and it can be reused and recycled. It will never run out.

The Periodic Table ExtravaganzaBy: Thomas JordanMr. Bryant Period: 5

Conclusion:Boron and Aluminum are in the group number 13 because they have 3 valence electrons and 3 is the last number in 13. Nitrogen has 5 valence electrons and it is in the group number 15, 5 is the last number in 15.Boron and Nitrogen are located in the Period number 2 because they have electron shells. Aluminum has the period number 3 because it has 3 electron shells.My elements are grouped closely together in the periodic table boron shares the group number with aluminum and the period number with nitrogen.Similarities: Boron and Aluminum are solids. Boron is a conductor of electricity if heated up and aluminum is a conductor.Aluminum is more reactive than Boron becuase the trend is reactivity increases when descending down a group.Nitrogen is very unreactive.

http://www.eoearth.org/article/Boron?topic=74544http://www.chemicool.com/elements/boron.htmlhttp://www.chemicool.com/elements/boron.htmlhttp://www.chemicool.com/elements/aluminum.htmlhttp://environmentalchemistry.com/yogi/periodic/Al.htmlGeneral Chemistry 5th Edition (Book) By: Whitten, Davis, Peck 1996

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