21. Actinides Illustrated article, covering the uses of these elements in nuclear chemistry, and related research initiatives. http://www.llnl.gov/str/Terminello.html

UNDERSTANDING the periodic table, with its assemblage of columns and rows of elements, has been a perennial challenge for chemistry students. (See the below.) Understanding at the atomic level a remarkable row of elements has been a particular research challenge for Lawrence Livermore scientists over the years. That row is called the actinides, a collection of 14 radioactive elements named after the element actinium. "There's a tremendous amount we don't know about the actinides," says Lawrence Livermore chemist Lou Terminello, who leads the Materials Science and Technology Division of the Chemistry and Materials Science Directorate. To learn more about these elements, he says, the Department of Energy funds about $100 million per year for research at Lawrence Livermore. The research is conducted by teams of chemists, physicists, engineers, metallurgists, and environmental scientists on a diverse set of national security and environmental issues. Terminello says that a more fundamental understanding of actinides is needed to better assess the nation's nuclear stockpile, help stem the clandestine proliferation of nuclear weapons, and better understand the implications of nuclear fuels' (such as enriched uranium) use and storage. Environmental contamination by actinides is also a major concern at several major DOE facilities. In addition, actinides such as uranium, neptunium, plutonium, and americium are the major contributors to the long-term radioactivity of nuclear waste currently targeted for the proposed Yucca Mountain repository in Nevada.

22. Nuclear Chemistry Nuclear chemistry deals with the nuclei of atoms breaking apart. Atoms are continually undergoing decay. When studying nuclear chemistry, there is a typical format used to http://www.shodor.org/unchem/advanced/nuc/

HOME Course Chapters Calculator Fundamentals Mathematics Review Basic Concepts Advanced Concepts ... Integration Techniques Section Tests Pre-test Post-test Useful Materials Glossary Online Calculators Redox Calculator Kinetics Arrhenius Calculator Thermodynamics Calculator Nuclear Decay Calculator ... Nomenclature Calculator Related Information Links Texas Instruments Calculators Casio Calculators Sharp Calculators Hewlett Packard Calculators ... Contact Webmaster Nuclear Chemistry Nuclear chemistry deals with the nuclei of atoms breaking apart. Atoms are continually undergoing decay. When studying nuclear chemistry, there is a typical format used to represent specific isotopes. Nuclear equations are typically written in the format shown below. There are 5 different types of radioactive decay. Alpha decay follows the form: Where A is the parent isotope (the atom being broken apart) B is the daughter isotope or the isotope formed. When an element is broken down in alpha decay it looses two neutrons and two (2) protons. This means that the name of the element will change as well, moving back two (2) places on the periodic table. Alpha decay is not very penetrating because the He atoms capture electrons before traveling very far. However it is very damaging because the alpha particles can knock atoms off of molecules . Alpha decay is the most common in elements with an atomic number greater than 83. Beta negative decay follows the form: The beta emission increases the atomic number by one (1) by adding one (1) proton. At the same time, one (1)

23. Chemistry, Department Of Active areas of research include organic, inorganic, physical, and nuclear chemistry, chemical and structural biology, materials science and TRIUMF. News, faculty and staff phonelist, alumni, information on department, undergraduate and graduate studies, job opportunities and faculty profile. http://www.sfu.ca/chemistry/

24. Nuclear Chemistry Nuclear Chemistry. This module is still under construction! Graphics and activities will be added very soon. Thank you for your patience. http://www.chem.duke.edu/~jds/cruise_chem/nuclear/nuclear.html

Nuclear Chemistry This module is still under construction! Graphics and activities will be added very soon. Thank you for your patience. To the Teacher Introduction Nuclear Chemistry, the Sun and Life Do you enjoy spending the day exploring at the beach? How about working in the garden, playing softball, skateboarding or just being in the warmth of the magnificent sun. Why is that many societies throughout history have worshipped the sun? It is because the sun provides warmth and energy, and therefore life itself. Without this energy from the sun, life could not exist as we know it. Without nuclear chemistry the sun would not exist. Have you ever wondered how the sun produces energy? The sun produces energy through a nuclear chemical reaction called nuclear fusion. Fusion is a nuclear reaction in which the nuclei of light atoms combine. Through a series of fusion reactions, a tremendous amount of energy is produced which sustains all life on the earth. Nuclear chemistry affects many aspects of our lives everyday. As we shall discover in this modules, radioisotopes are everywhere! They are in the air we breath, the water we drink, the soil we till, and the building materials we use for our homes. They are also found in the foods we eat to nourish the cells of our bodies; therefore, we all contain radioisotopes. Explore the links in this modules to learn all about nuclear chemistry. Where would you like to go to learn more?

25. Nuclear Chemistry Webquest Nuclear Chemistry Web Quest By Mrs. Kurzman Mrs. Towle Introduction “Nuclear chemistry http://www.slideshare.net/brucelee55/nuclear-chemistry-webquest

26. Chemistry Division Responsible for isotope and nuclear chemistry, biochemistry, health and environmental chemistry, and special-function lasers. http://pearl1.lanl.gov/external/

27. Nuclear Chemistry Radioactive elements are elements that do not have a stable nucleus. These elements give off particles and/or rays to change their nucleus and become a stable element. http://library.thinkquest.org/10429/low/nuclear/nuclear.htm

Radioactive elements are elements that do not have a stable nucleus. These elements give off particles and/or rays to change their nucleus and become a stable element. Some lightweight isotopes are radioactive but, all elements that have an atomic number greater than 82 are radioactive. The process of changing the nucleus to a stable one is called radioactive decay. Nuclear Equations Radioactive Decay Nuclear Bombardment Reactions Half-Life Nuclear Equations Nuclear notations are used to represent the decay of one element into another. The generic formula for a radioactive element is as follows: Some examples of nuclear decay equations are: Nuclear Equations Radioactive Decay Nuclear Bombardment Reactions Half-Life ... Top of Page Radioactive Decay There are three types of natural radioactive decay. They are alpha emisson, beta emission, and gamma emission. Alpha emission results in releasing an alpha particle. An alpha particle has two protons and two neutrons, so it has a positive charge. (Since it has two protons it is a helium nucleus.) It is written in equations like this: Beta emission is when a high speed electron (negative charge) leaves the nucleus. Beta emission occurs in elements with more neutons than protons, so a neutron splits into a proton and an electron. The proton stays in the nucleus and the electron is emitted. Negative electrons are represented as follows:

28. Nuclear Chemistry Nuclear Chemistry Why? Nuclear chemistry is the subdiscipline of chemistry that is concerned with changes in the nucleus of elements. These changes are the source of http://www.sas.upenn.edu/~mcnemar/apchem/nuclear.pdf

29. Nuclear Chemistry HW From textbook “CHEMISTRY a Contemporary Approach” Read “Energy of Nuclear Changes” p525529; Do exercise p531; Read “Nuclear Fusion” p532 http://www.chemcool.com/regents/nuclearchemistry/aim4.htm

nuclear chemistry .....aim what are fission and fusion nuclear reactions? aim home aim HW From textbook �CHEMISTRY a Contemporary Approach� Read �Energy of Nuclear Changes� p525-529 Do exercise p531 Read �Nuclear Fusion� p532 Do questions 1,23,27,28 p534-537 A fission nuclear reaction is the splitting of a heavy nucleus into two or more lighter nuclei. Example U-235 is bombarded with slow neutrons to produce Ba-139, Kr-94, or other isotopes and 3 fast moving neutrons A nuclear chain reaction is a reaction in which an initial step, such as the reaction above, leads to a succession of repeating steps that continues indefinitely. Nuclear chain reactions are used in nuclear reactors and nuclear bombs. Example A fusion nuclear reaction is the combination of very light nuclei to make a heavier nucleus. Extremely high temperatures and pressures are required in order to overcome the repulsive forces of two nuclei. Example Energy released in a nuclear reaction (fission or fusion) comes from the fractional amount of mass converted into energy. Nuclear changes convert matter into energy. Energy released during nuclear reactions is much greater than the energy released during chemical reactions. Example Consider the fusion nuclear reaction taking place in stars.

30. The Living Textbook Of Nuclear Chemistry The Living Textbook of Nuclear Chemistry is an attempt to gather on a single website a number of supplemental materials related to the study and practice of nuclear chemistry http://livingtextbook.oregonstate.edu/

The Living Textbook of Nuclear Chemistry The Living Textbook of Nuclear Chemistry is an attempt to gather on a single website a number of supplemental materials related to the study and practice of nuclear chemistry. Among these materials are: Some audio/video tapes and textual material relating to the history of nuclear chemistry. Links to modern compilations of data of use to the student and practicing professional. Links to modern nuclear and radiochemistry courses whose content might be of interest. Selected articles on nuclear and radiochemistry. ... Acknowledgments Note: This site is best viewed with Macromedia Flash Player and Quicktime Player. RealPlayer is also supported.

31. NUCLEAR CHEMISTRY NUCLEAR CHEMISTRY FISSION v.s. FUSION . Nuclear Power and Nuclear Power Student Project Audrey Sanderson's Excellent Website http://www.hschem.org/Resources/nuclearchem.htm

NUCLEAR CHEMISTRY FISSION v.s. FUSION Nuclear Power and Nuclear Power Student Project Audrey Sanderson's Excellent Website asanders@dist214.k12.il.us Steve Marsden's Spectacular Chemistry Resources Site http://www.chemtopics.com/ includes extensive media resources to explore: Nuclear Chemistry Media and Lecture Notes and explanations (scroll down to Nuclear Chemistry) Nuclear chemistry from the T he Lab Archive at Everett Community College (This is a GREAT resource) http://www.labarchive.net/labdb/search-category?category_id=1 Demonstrating a chain reaction with mousetraps (Demonstration) Modeling half life with pennies (Link to a full procedure) Simulating a chain reaction with dominoes (Full Procedure) David W. Brooks' site, Doing Chemistry , devoted to experiments and demonstrations suitable for high schools Isotope/Element Model Description 112, First Order Reaction Analogy Description Patrick Gormley's Science Resource Center LaPeer County Information Depot ~ www.lapeer.org Halflife Determination (Simulated Experiment) Nuclear Power: Our Misunderstood Source of Electricity NSF-supported curriculum development project at Kennesaw University called Chemcases.com developed by Dr. Frank Settle

32. NUCLEAR CHEMISTRY BOOKS Radiochemistry and Nuclear Chemistry, 3rd Edition Gregory Choppin (Author), Jan Rydberg, JanOlov Liljenzin Modern Nuclear Chemistry Walter D. Loveland, David J. Morrissey http://nuclear-chemistry.com/

33. Nuclear Chemistry And The Community Insight into questions about nuclear issues that are in the news during these times of unrest. http://www.chemcases.com/nuclear/index.htm

Nuclear Chemistry and the Community Dr. Frank Settle Nuclear Science in: A complete review and case study of nuclear chemistry Two 45 minute classes , or A quick review for interested learners (below) Goals : In this session you will be introduced to: The relationship of energy and matter The origins of nuclear energy The use of nuclear energy for power and weapons High energy radiation How spent nuclear power fuels are potential sources of nuclear weapons Insight into questions about nuclear issues that are in the news during these times of unrest. Albert Einstein as Memorialized at the US National Academy of Sciences Energy and Matter: Nuclear science began with Albert Einstein who recognized that matter and energy were equivalent. We have all heard the equation: E=mc This was Einstein's understanding at the beginning of the last century. Energy - the ability to provide heat or do work, had an equivalency with matter - the mass of the physical universe. Origins of Nuclear Energy We know that atoms - the fundamental particles of matter - consist of a small, dense nucleus surrounded by lighter, charged particles or waves called electrons.

34. Nuclear Chemistry Labs. Do The Radioactive Decay of Pennium lab, a halflife simulation using pennies. The Radioactive Decay of Candium is another half-life simulation but uses candy that http://www.nclark.net/NuclearChem

35. Nuclear Chemistry | Chemistry: Foundations And Applications | Find Articles At B Nuclear Chemistry from Chemistry Foundations and Applications provided by Find Articles at BNET http://findarticles.com/p/articles/mi_gx5216/is_2004/ai_n19132854/

BNET Log In Join Search All of BNET Publications Library Home Commentary Leadership Life at Work ... Newspaper Collection document.cookie='MAD_FIRSTPAGE=1;path=/;domain=findarticles.com'; Reference Publications Nuclear Chemistry Chemistry: Foundations and Applications by W. Frank Kinard Next Nuclear Chemistry Nuclear chemistry is the study of the chemical and physical properties of elements as influenced by changes in the structure of the atomic nucleus. Modern nuclear chemistry, sometimes referred to as radiochemistry, has become very interdisciplinary in its applications, ranging from the study of the formation of the elements in the universe to the design of radioactive drugs for diagnostic medicine. In fact, the chemical techniques pioneered by nuclear chemists have become so important that biologists, geologists, and physicists use nuclear chemistry as ordinary tools of their disciplines. While the common perception is that nuclear chemistry involves only the study of radioactive nuclei, advances in modern mass spectrometry instrumentation has made chemical studies using stable, nonradioactive isotopes increasingly important. There are essentially three sources of radioactive elements. Primordial nuclides are radioactive elements whose half-lives are comparable to the age of our solar system and were present at the formation of Earth. These nuclides are generally referred to as naturally occurring radioactivity and are derived from the radioactive decay of thorium and uranium. Cosmogenic nuclides are atoms that are constantly being synthesized from the bombardment of planetary surfaces by cosmic particles (primarily protons ejected from the Sun), and are also considered natural in their origin. The third source of radioactive nuclides is termed anthropogenic and results from human activity in the production of nuclear power, nuclear weapons, or through the use of particle accelerators.

36. Basic Nuclear Science Information Please note, when you click on the keywords below, you will get a popwindow. If the new window does not have a scroll bar, you can click on the pop-window and use your arrow keys http://www.lbl.gov/abc/Basic.html

37. Nuclear Chemistry Summary | BookRags.com Nuclear Chemistry. Nuclear Chemistry summary with 6 pages of encyclopedia entries, research information, and more. http://www.bookrags.com/research/nuclear-chemistry-woc/

38. Nuclear Chemistry - Chemistry: Foundations And Applications | HighBeam Research Nuclear Chemistry find Chemistry Foundations and Applications articles. div id= bedoc-text h1Nuclear Chemistry/h1 hr/ pNuclear chemistry is the study of the chemical and http://www.highbeam.com/doc/1G2-3400900358.html

Research articles and archives from 6,500+ publications Please enter a keyword above. Log in Free trial What's in a free trial Help ... Articles Reference News Wires, White Papers, and Books Chemistry: Foundations and Applications Article: Nuclear Chemistry Article from: Chemistry: Foundations and Applications Article date: January 1, 2004 Author: Customer Support Related articles Nuclear Chemistry Nuclear chemistry is the study of the chemical and physical properties of elements as influenced by changes in the structure of the atomic nucleus. Modern nuclear chemistry, sometimes referred to as radiochemistry, has become very interdisciplinary in its applications, ranging from the study of the formation of the elements in the universe to the design of radioactive drugs for diagnostic medicine. In fact, the chemical techniques pioneered by nuclear chemists have become so important that biologists, geologists, and physicists use nuclear chemistry as ordinary tools of their disciplines. While the common perception is that nuclear chemistry involves only the study of radioactive nuclei, advances in modern mass spectrometry instrumentation has made chemical studies using stable, nonradioactive isotopes increasingly important.

39. Nuclear Chemistry | Webelements Nexus The discovery of a new chemical element with atomic number Z=117 is reported. The isotopes 293 117 and 294 117 were produced in fusion reactions between 48 Ca and 249 Bk. http://www.webelements.com/nexus/taxonomy/term/20

40. Nuclear Chemistry - Chemistry Encyclopedia - Structure, Reaction, Uses, Elements Manhattan Project Chemistry Encyclopedia, Materials Science - Chemistry Encyclopedia, Measurement - Chemistry Encyclopedia, Membrane - Chemistry Encyclopedia, Mendelevium http://www.chemistryexplained.com/Ne-Nu/Nuclear-Chemistry.html

Powered by JRank Chemistry Explained Foundations and Applications Chemistry Ne-Nu Nuclear Chemistry Nuclear chemistry is the study of the chemical and physical properties of elements as influenced by changes in the structure of the atomic nucleus. Modern nuclear chemistry, sometimes referred to as radiochemistry, has become very interdisciplinary in its applications, ranging from the study of the formation of the elements in the universe to the design of radioactive drugs for diagnostic medicine. In fact, the chemical techniques pioneered by nuclear chemists have become so important that biologists, geologists, and physicists use nuclear chemistry as ordinary tools of their disciplines. While the common perception is that nuclear chemistry involves only the study of radioactive nuclei, advances in modern mass spectrometry instrumentation has made chemical studies using stable, nonradioactive isotopes increasingly important.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 2     21-40 of 53    Back | 1  | 2  | 3  | Next 20