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| Energy levels or shells from the nucleus out identified as KLMNOPQ |
Orbits |
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noypi69 Tue, 25 Nov 2008 14:03:18 GMT |
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| The second stage of the process of pair production |
Annihilation Reaction |
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noypi69 Tue, 25 Nov 2008 14:03:35 GMT |
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| The interaction between a high energy photon and the nuclear force of an atom |
Pair production |
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noypi69 Mon, 24 Nov 2008 23:51:35 GMT |
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| In an atom with three or more energy levels when an inner hell electron i ejected and the electrons from higher shells "drop" |
Cascade effect |
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noypi69 Mon, 24 Nov 2008 23:51:35 GMT |
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| Palladium triad |
Heavy Hard dense metals also reffered to as Noble Metals |
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| Platinum Triad |
Heave hard dense metals that are nearly inert often called "Noble metal" |
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| The Iron Traid |
Heavy hard dense metals are the most magnetic materials known |
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noypi69 Mon, 24 Nov 2008 23:51:35 GMT |
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| Periods or series |
Each horizontal row that represent an energy level |
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noypi69 Mon, 24 Nov 2008 23:51:35 GMT |
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| All of the elements in Group B (all Metals) |
Transitional Elements (all metals) which have 1 or 2 valence electrons |
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| Group 8A |
Noble Gasses 8 Valence Electrons |
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| Group 7A |
Halogens 7 Valence Electrons |
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| Group 2A |
Alkali Earth Metals 2 Valence Electron |
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| Group 1A |
Alkali Metals 1 Valence Electron |
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| Valence Electrons |
The number of each group |
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noypi69 Mon, 24 Nov 2008 23:51:35 GMT |
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| Representative Elements |
All the elements in "A" group |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| Families or Groups |
Elements with simial chemical and electrical properties from the vertical columns |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| Energy disturbances in space that travel at the speed of light |
Photon |
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noypi69 Tue, 25 Nov 2008 14:10:34 GMT |
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| X-ray photon that disrupts the electron shell, falling upon, or striking. |
Incident |
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noypi69 Tue, 25 Nov 2008 14:09:55 GMT |
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The chemical and physical properties of the elements are periodic functions of their atomic numbers |
Periodic Law |
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noypi69 Tue, 25 Nov 2008 14:09:38 GMT |
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| Mosley |
1906 Discovered that the wavelength of X-ray changed in specific amounts as different tagert materials were used |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| Mendeleyev |
Devised the first periodic table fo the elements by arranging elements by their checmial characteristics |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| A chemical compound always contains exactly the same proportion of elements by mass |
Law of Definite composition |
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noypi69 Tue, 25 Nov 2008 14:05:59 GMT |
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| Metalloids |
Those elements having characteristics of both metals and non-metals |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| Characterisitics of Non-Metals |
When in a solid form are brittle, many exist as gasses in nature |
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| Non-Metals |
Elements that are poor conductors of heat or electricity |
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noypi69 Tue, 25 Nov 2008 14:18:36 GMT |
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| Characteristics of Metals |
Luster, Conduct heat, conduct electricity, ductile and malleable |
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noypi69 Mon, 24 Nov 2008 20:28:18 GMT |
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| Metals |
All but 22 of the known elements classification |
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| Compounds |
Substances that may be decomposed into two or more substances by ordinary chemical means |
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noypi69 Mon, 24 Nov 2008 20:28:17 GMT |
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| Atom |
The smallest fragment of a particular element that is still recognizable as such |
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noypi69 Mon, 24 Nov 2008 20:28:17 GMT |
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| Elements |
Materials that can not be further decomposed by ordinary chemical means |
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noypi69 Mon, 24 Nov 2008 20:28:17 GMT |
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| Heterogeneous Materials |
Consisting of or involving dissimilar elements or parts, each keeping their own characteristics |
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Uniform through out in structure of makeup |
Homogeneous Materials |
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noypi69 Tue, 25 Nov 2008 14:11:47 GMT |
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| Matter |
Anything that occupies space, has a mass, and possesses the property of inertia |
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noypi69 Mon, 24 Nov 2008 20:28:17 GMT |
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Specifies the orientation of the spin axis of an electron |
Spin Quantum Number |
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noypi69 Tue, 25 Nov 2008 14:14:52 GMT |
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This number divides the subshell into individual orbitals which hold the electrons |
Magnetic Quantum Number |
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noypi69 Tue, 25 Nov 2008 14:14:33 GMT |
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Specifies the shape, divides the shells into smaller groups of orbital called sub shells |
Orbital (angular) Quantum Number |
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noypi69 Tue, 25 Nov 2008 17:57:16 GMT |
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The maximum number of electrons that may occupy the outermost energy level of any atom is eight (8) |
Bury-Bohr Principle
(Rule of Octet) |
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noypi69 Tue, 25 Nov 2008 14:11:19 GMT |
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| Principle Qauntum Number Formula |
2n(to the second power)
Where N represents the energy level. The maximum electrons per energy level |
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noypi69 Mon, 24 Nov 2008 23:57:01 GMT |
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The maximum number of electrons that may occupy a given energy level, the distance represents a specific energy state. |
Principle Quantum Number |
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noypi69 Tue, 25 Nov 2008 17:02:55 GMT |
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Electrons are very restricted in their orbits around the nucleus. Their possible location is described by a set of four intergers |
Orbital Electrons |
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noypi69 Tue, 25 Nov 2008 14:15:10 GMT |
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| Outgrowth of the quantum concept that all forms of energy are released in discrete units or bundles |
Qaurta |
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noypi69 Tue, 25 Nov 2008 14:15:22 GMT |
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Mathmatical system for describing the behavior of such aspects as light molecules atoms and subatomic particles. |
Quantum Mechanics |
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noypi69 Tue, 25 Nov 2008 17:03:05 GMT |
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The exact location of electrons around the nucleus or the location of any subatomic particle must be replaced with the concept of "probable distribution" A given electron or other particle will probably be located in a given region rather than a specific location depending on its energy state. |
Heisenberg Uncertainty Principle |
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noypi69 Tue, 25 Nov 2008 14:16:18 GMT |
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It is impossible to determine the location of atomic particles, and anything that might be used to pinpoint the location would alter its position and change it's future location. |
Heisenberg Uncertainty Principle(cont) |
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noypi69 Tue, 25 Nov 2008 17:54:57 GMT |
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| When an atom absorbes energy, an electron moves to a higher energy level and quickly emits radiation to return to it's lowest possible energy level |
Excited State |
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noypi69 Tue, 25 Nov 2008 14:06:43 GMT |
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| The state an electron occupies when it is at its lowest energy level, no energy is emitte dor absorbed in this state |
Ground State |
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noypi69 Tue, 25 Nov 2008 14:17:57 GMT |
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When an atom emits or absorbs electromagnetic radiation and an electron moves from one energy level to another and the energy that is emitted or absorbed is equal to the difference between the electron binding energy and values of the initial state and the final state |
Bohrs postulate number 2 |
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noypi69 Tue, 25 Nov 2008 14:17:45 GMT |
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| Electron energy/Distance from the Nucleus |
Farther away=more energy |
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noypi69 Mon, 24 Nov 2008 20:28:17 GMT |
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The energy required to completely remove an electron from the orbit of an atom |
Electron binding energy |
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noypi69 Tue, 25 Nov 2008 14:08:37 GMT |
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Electrons revolve around the nucleus in certain allowed orbits, and no energy is emitted or absorbed by the atom as long as the electrons remain in their original orbits |
Bohr's postulate number 1 |
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noypi69 Tue, 25 Nov 2008 14:08:19 GMT |
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| Equal number of protons and electrons. |
Electricly Neutral Atom |
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noypi69 Tue, 25 Nov 2008 14:01:55 GMT |
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Negatively charged particles which orbit the nucleus of an atom
Can NEVER under an circumstance exist in the nucleus of an atom |
Electrons or orbital electrons |
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noypi69 Tue, 25 Nov 2008 14:04:55 GMT |
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