Discovered: known in India and China before 1500 and to the Greeks and Romans before 20 BC as the copper-zinc alloy brass
Origin: The name is derived from the German ‘Zink’.
Atomic no: 30
Mass No: 65
Description: A grey metal with a blue tinge. World production exceeds 7 million tons a year, and it is used to galvanise iron to prevent it rusting. It is also employed in alloys and batteries, and as zinc oxide to stabilise rubber and plastics. Zinc is essential for all living things, and is important for growth and development. The average human body contains about 2.5 grams and takes in about 15 milligrams per day. Some foods have above average levels of zinc, including herring, beef, lamb, sunflower seeds and cheese.
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Use of diamonds
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Protein Design: Automated protein discovery and synthesis
In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.
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Ozone
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Features of the Scanning Tunneling Microscope
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Percentage Ionization
The percentage of the weak electrolyte that ionizes in a solution of given concentration.
Potential Energy
Energy that matter possesses by virtue of its position, condition or composition.
Saponification
Hydrolysis of esters in the presence of strong soluable bases.
Dubnium
Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.
Bonding Pair
Pair of electrons involved in a covalent bond.
Band of Stability
Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.
Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
Ferromagnetism
The ability of a substance to become permanently magnetized by exposure to an external magnetic field.
Resonance
The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.
Emulsion
Colloidal suspension of a liquid in a liquid.
