infocobuild

Atom

The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons (except in the case of hydrogen-1, which is the only stable nuclide with no neutrons). The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other by chemical bonds based on the same force, forming a molecule. An atom containing an equal number of protons and electrons is electrically neutral, otherwise it is positively or negatively charged and is known as an ion. An atom is classified according to the number of protons and neutrons in its nucleus: the number of protons determines the chemical element, and the number of neutrons determines the isotope of the element. (from wikipedia.org)

Structure of the Atom

This consists of a series of videos that explains the structure of the atom: The Earliest Models; Smaller than the Smallest; The Rutherford Model; The Bohr Model; Spectra; The Wave Mechanical Model.


Related Links
Atom - wikipedia
The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons.
Atom (BBC documentary)
Professor Jim Al-Khalili tells the story of the greatest scientific discovery ever - that everything is made of atoms.
Atoms and Their Electrons
An extremely funny educational film explaining ionic bonding, and the atomic properties of the first twenty elements of the periodic table.
Our Friend The Atom
Rare Walt Disney Science series from 1957 describing the advent of the Nuclear Age. Dr. Heinz Haber hosts this look at the possibility of an exciting new power source.
Chemistry: A Volatile History
A science documentary series presented by Professor Jim Al-Khalili, tracing the story of how the elements - the building blocks that make up our entire world - were discovered and mapped.

e-Books
The Atom
Author: John Tutin. Subject: Natural Sciences; Physics; Physical Nature of Matter. Publisher: Green and Company. Language: English. Book Contributor: Osmania University.
The Atom
Author: Albert Cushing Crehore. Subject: Atoms. Publisher: Van Nostrand, New York. Language: English. Book Contributor: Gerstein - University of Toronto.
The Atom and the Bohr Theory of Its Structure
Author: H. A. Kramers and Helge Holst. Subject: Niels Henrik Bohr, 1885-1962; Atoms. Publisher: Gyldendal, London. Language: English. Book Contributor: Gerstein - University of Toronto.
The Structure of the Atom
Author: E.N. DA C. Andrade. Publisher: Harcourt, Brace and Company, Inc. Language: English. Book Contributor: Universal Digital Library.
The Study of the Atom: or The Foundation of Chemistry
Author: F. P. Venable, 1856-1934. Subject: Atomic Theory. Publisher: Easton, PA: The Chemical Publishing Company. Language: English. Book Contributor: University of California Libraries.