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The process by which solvent molecules pass through a semipermable membrane from a dilute solution into a more concentrated solution.

 

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Pauli Exclusion Principle

No two electrons in the same atom may have identical sets of four quantum numbers.

Zinc

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.

Lewis Base

Any species that can make available a share in an electron pair.

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Artificial Transmutation

An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.

Crystalline Solid

A solid characterized by a regular, ordered arrangement of particles.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Chemical Change

A change in which one or more new substances are formed.

Insulator

Poor electric and heat conductor.

Precipitate

An insoluble solid formed by mixing in solution the constituent ions of a slightly soluble solution.