The smallest part of an element that retains its properties. It is possible to 'split' the atom up further into components; protons - which have a positive charge, electrons, which have a negative charge and neutrons which have no charge. The simplest atom is hydrogen, which consists of a single proton nucleus and has a single electron forming an orbit or shell around the proton. The next simplest is helium, with two protons and two neutrons in the nucleus with two electrons orbiting within the shell - see selow for diagram:
(Learning Modules / Chemistry / Polymers) The simplest unit which defines a particular element. Atoms are made up of protons, an equal number of electrons, and neutrons. Different atoms differ in their number of protons and electrons.
The smallest unit capable of combining with another, an atom is a particle capable of combining with another.
==Fictional character biography== Ryan Choi, as described by DC solicitations, is `a young hotshot professor who`s filling the extra spot on Ivy University`s teaching staff. .. and who inadvertently ends up filling the old Atom`s super-heroic shoes`. This new Atom is based on a redesign by Grant Morrison. He debuted in the Brave...Found on http://en.wikipedia.org/wiki/Atom_(Ryan_Choi)
The atom was a unit of time referred to in medieval philosophical writings as the smallest possible division of time. The earliest known occurrence in English is in Byrhtferth`s Enchiridion (a science text) of 1010–1012, where it was defined as 1/564 of a momentum (1½ minutes), and thus equal to 15/94 of a second. It was used in t...Found on http://en.wikipedia.org/wiki/Atom_(time)
Archives • Read more... ...Found on http://en.wikipedia.org/wiki/Atom_(logic)
Everything is made up of tiny atoms. An atom is the smallest part of an element that has the properties of that element. Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
The constituent of Elements - the smallest building block which can combine chemically with other atoms and therefore form compounds.
Found on http://www.ionactive.co.uk/glossary.html
- (physics and chemistry) the smallest component of an element having the chemical properties of the element 2. [n] - (nontechnical usage) a tiny piece of anythingFound on http://www.webdictionary.co.uk/definition.php?query=atom
The smallest particle which makes up a specific substance. It's composed of a center around which electrons revolve.
Found on http://www.encyclo.co.uk/local/20447
The basic structure of which all matter is made. It is made up of three particles; protons and neutrons (which make up the nucleus) and electrons (which orbit the nucleus). (The one exception to this is hydrogen which has only a proton at its nucleus. In its basic state an atom will form an element, the kind of element being dictated by the structu...Found on http://www.encyclo.co.uk/local/20448
The smallest portion of an element that can combine chemically with other atoms.Found on http://www.encyclo.co.uk/local/20474
The smallest particle of an element that can exist and still retain the ordinary chemical properties of that element. See also: Absorption Spectrum, Atomic weight, Aufbau Principle, Electron Affinity, Hunds Rule, Nucleus, Orbital, Valence Electrons.Found on http://www.diracdelta.co.uk/science/source/a/t/atom/source.html
A particle of matter which cannot be broken up by chemical means. Atoms have a nucleus consisting of positively-charged protons and uncharged neutrons of the same mass. The positive charges on the protons are balanced by a number of negatively-charged electrons in motion around the nucleusFound on http://www.encyclo.co.uk/local/20725
The smallest particle of an element.Found on http://www.encyclo.co.uk/local/20728
Compare with molecule and ion. An atom is the smallest particle of an element that retains the chemical properties of the element. Atoms are electrically neutral, with a positively charged nucleus that binds one or more electrons in motion around it.Found on http://antoine.frostburg.edu/chem/senese/101/glossary/a.shtml
The smallest part of an element that retains its properties. It is possible to split the atom up further into components; protons - which have a positive charge, electrons, which have a negative charge and neutrons which have no charge. The simplest atoFound on http://www.chemicalglossary.net/definition/115-Atom
is the smallest particle of a chemical element.Found on http://www.chemicalglossary.net/definition/118-ATOM
Atom is the basic building block of chemistry. Atoms, also called chemical elements, can combine with one another to form compound. It is the smallest unit of matter that cannot be decomposed into simpler substances by ordinary chemical processes.Found on http://www.chemicalglossary.net/definition/153-Atom
The smallest object that retains properties of an element. Composed of electrons and a nucleus (containing protons and neutrons).Found on http://www.chemicalglossary.net/definition/183-Atom
the smallest particle of an element which can exist alone or enter into a chemical combination.Found on http://www.chemicalglossary.net/definition/23-Atom
The smallest unit of an element which has all the properties of the element. It is composed of protons, neutrons and electrons.Found on http://www.chemicalglossary.net/definition/55-Atom
The smallest object that retains properties of an element. Composed of electrons and a nucleus (containing protons and neutrons).
Found on http://www.shodor.org/UNChem/glossary.html
The smallest unit of a chemical element, about a third of a nanometer in diameter. Atoms make up molecules and solid objects.
Found on http://www.encyclo.co.uk/local/20741
The smallest unit of en element which still retains the chemical characteristics of that element. An atom is made up of protons and neutrons in a nucleud surrounded by electrons. A molecule of water (H20) consists of two atoms of hydrogen and one atom of oxygen
Found on http://www.encyclo.co.uk/local/20747
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