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Chemistry

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by

Dominick Taylor

on 14 January 2013

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Transcript of Chemistry

GROUP 13 ELEMENTS Aluminum (Al) Very commonly used in cans,
aluminum foil, and a lot of
other household uses. Thallium Isotopes: Resources Used:
Chemicalelements.com
Theodoregray.com
Chemistry.about.com
Wikipedia.com
Azom.com
lenntech.com
Wallpapertube.com Boring Stuff:
Atomic Number
Atomic Mass
-----> (More Bohr'ing Stuff)
Bohr diagram of Indium
---> http://chemistry.bd.psu.edu/jircitano/periodic4.html Hans Christain Orstead Born on August 14, 1777
Died on March 9, 1851
He was a Danish physicist and chemist, he got his education at the University of Copenhagen. BORING STUFF About Indium Aluminum is the 3rd most abundant element on Earth, making up 8% of Earth's weight! Aluminum has the ability to resist Corrosion in the process of passivation, what does your element do? Physical:
-Found in red and black crystals
-Brown powder with no crystalline
strucure
Chemical:
-Combines with oxygen to make Boron Trioxide More like Swagium Boring Isotopes Aluminum is a vital material in the production of Space Shuttles. Yes, Space Shuttles. Solid State in
Standard Conditions
<---- Boron Even More Boring Stuff About Indium Aluminum was discovered by heating and combining Potassium amalgam with aluminum salts known as Alum. Who?
-Independently by Sir Humphrey Davy and Joseph-Louis Gay-Lussac and LJ Thernard together.
When?
-1808
How?
-They all isolated boron by combining boric acid with potassium
Uses:
Boron is used to make glass, ceramics, and enamels, including fiberglass for insulation. Also used in reactor control rods of nuclear reactors. History Of Boron That's Indium Indium is a silverish gray metallic colour with a tetragonal crystal lattice shape. ~Boron is a black solid at room temperature Coral Indium Stuff
The History of Indium
And How it's Made - This guy, Ferdinand Reich, is the guy who discovered Indium. He was colorblind so he grabbed his buddy Theodor Richter to interpret the colours whilst they worked together. In 1863 when the two were maxing and relaxing and doing some science stuff in Germany, they found Indium. The reason they founded it was when they were investigating the presence of Thallium in zinc through spectroscopy Richter saw an Indigo spectral line which they isolated and named Indium because of the colour of the spectral line. This guy met that guy + + = Indium dawg Gallium Indium is used to make thin film coatings which are used to make electronic devices as liquid crystal displays (LCDs) Interesting Facts! -Boron is an essential nutrient for all green plants.

-Boron is an indispensable element in NIB magnets NIB magnets are very powerful magnets invented in the early 1980s. They are used in computers, cell phones, medical equipment, toys and motors. -Boron can be found in boron mines in mainly Turkey and the United States ~Boron isn't exactly hazardous, but if in a powder it should not be inhaled and could be flammable. However, compounds of boron can be hazardous. As a pure metal indium emits a high-pitched cry or crackling sound, when it is bent. Isotope Half Life
Al-26 730000.0 years
Al-27 Stable
Al-28 2.3 minutes Thallium -Discovered by Sir William Crooks in 1861 with the newly developed idea flame spectroscopy and Thallium makes a green spectral line.
-Its element and compounds of thallium should be handled carefully because it is suspected to be a carcinogen.
-Uses: rat and ant poisons, detecting infrared radiation

More Gallium
-USES: It can be found in some vitamins and also water bottles. Also used in nuclear bomb pits. not very useful to humans Indium is most commonly found in materials that contain zinc and is associated with copper, tin, and lead such as Sphalerite. Magnetsforfridge.com
Cheeseisfunny.com
Kulfoto.com
Quickmeme.com Group 13 Elements Are Grouped Together Because:
They have similar hardness, all are relatively soft.
They are all decent conductors (Boron requires high temperatures to conduct due to its metalloid properties).
They all have 3 Valence electrons.
They all have stable isotopes and form stable compounds. -Silvery, glass like, shiny, soft metal -orthorhombic crystalline structure
-dissolves in acids and alkalis History of Gallium Gallium was discovered by a french chemist, Paul Emile Lecoq de Boisbaudran in 1875. Paul had been looking at light spectrum's for about 15 years and found that one was missing between aluminum and indium and that was, Gallium. He worked through a large zinc ore and eventually found gallium in the ore. -Gallium isn't exactly hazardous, people have handled it before however it should not be purposefully consumed in large doses. -It can be hazardous to the environment. It is used in nuclear bomb pits and when it is suppose to be removed the gallium contributes to a huge amount of pollution of water with radioactive substances.
-Dmitri Medeleev predicted Gallium's existence in
1871.
-the boiling point of gallium is unusually high, 3999° F,
2204° C. Interesting Facts Thallium is a solid with a silvery-white color. It can not be found in free nature. It resembles tin when isolated and discolors when exposed to the air. Its crystal structure is a hexagonal.

-Sources of Thallium are magnesium nodules on the ocean floor, also by smelting lead and zinc ores.
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