CHEMISTRY

Reviewed by GL: Good Job!
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28/03/09  *The Smallest Components In An Atomic Particle* :  The atom is the smallest part of an element that is used for chemical reactions. And the atom is made up of 3 atomic particles that are called: ** Quarks: Quarks can be found in protons and neutrons but not electrons. There are 6 types of quarks which are called Down, Up, Strange, Charm, Bottom, and Top. For every type of quark there is a anti-quark with an opposite charge. Leptons: Like the quark, leptons also have different types. But the lepton only as 3. The Muon, Tau, and the Neutrinos. Also like the quarks, the leptons each have their own anti-lepton. The quark and the lepton are both called fundamental particles because they can´t be broken down any farther.
 * **The Proton**
 * **The Electron**
 * **And the Neutron.**
 * It´s now known that these three particles are composed of sub-atomic particles called //quarks// and //leptons,// which can also be called the fundamental or elementary particles.

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__Nanotechnology in Chemical compounds..... :]

An international team of scientist have discovered a new chemical compound that consists of a single element- boron. The researchers have found that extreme pressure and high temp. of pure boron can take 2 different forms that can fuse together to create the compound called *boron boride*. Because this new compound has a low mass, high strength, and responds to neutron irridiation; it can have important applications in technology like nuclear engineering in extreme environments. This study revealed the superconductivity with a high transition temp. for an element. The structure and mechanism has remained a puzzle. Right now, the scientist are trying to understand the transition to superconductivity in boron under a certain amount of pressure.__

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 * Reviewed by GL: And the Periodic Properties? [[image:Check_-_green.png width="19" height="19"]] **

Nobelium...

Atomic Number: 102 Molecular Weight: 259 g.mol Melting Point: 827 celsius Boiling Point: UNKNOWN Density: UNKNOWN Phase At Room Temperature: Solid Element Classification: Metal

The element Nobelium was named after Alfred Nobel. In 1957, scientists working at the Nobel Institute od Physics in Stockhlom, Sweden, had said that they discovered a new element. They achieved this by bombarding curium-244 with carbon-14 atoms with a device called a cyclotron. Nobelium had a half-life of 10 minutes. Then in 1958, another group of scientists in California tried to confirm what the scientists in Sweden had attempted. But thier element only lasted 3 seconds. This attempt by the californians was later also confirmed by groups of scientists in Russia. The credit for discovering a new element was given to The scientists in the Lawrence Berkeley Laboratory, in California. Since Nobelium has been produced in tiny amounts, it has no other uses besides for scientific research.

Appearance: Nobelium appears as a silvery-white or grayish color. Electronic Configuration: 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f14