StudySphere provides fast, easy and free access to a wide variety of research-quality child-safe websites organized for education online from home, school, study abroad and home school. StudySphere’s goal is to help students, teachers, librarians, and other researchers find both highly targeted and closely related information quickly.
Votes:0 MathMol Home Page Elements, Atoms, and Molecules For a more advanced list of resources on atoms, elements and compounds Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen. The smallest particles of matter are called atoms . Remember the carrot from the other chapter. If you continue to chop a carrot into smaller and smaller pieces, eventually you would reach a point where you could not cut up the carrot anymore, but still have carrot. You would then have molecules of carrot. The same applies to elements. If you continually cut up a piece of aluminum, you will reach a point that you could no longer divide it. These are aluminum atoms. An atom is the smallest parti Read More Go to Site
Votes:0 Hydrogen Energy Storage II Energy Density of Some Materials (KHW/kg) Gasoline --------------> 14 Lead Acid Batteries ----> 0.04 Hydrostorage -----------> 0.3 (per meter 3 ) Flywheel, Steel --------> 0.05 Flywheel, Carbon Fiber -> 0.2 Flywheel, Fused Silica -> 0.9 Hydrogen ---------------> 38 Compress Air ------------> 2 (per meter 3 ) So potentially, Hydrogen wins big but the main problem is that
there are no naturally occurring sources of hydrogen so it must
be made and that has an energy cost associated with it. Hydrogen as a Secondary Fuel: While hydrogen is the most abundant element in the Universe on the Earth its mostly found
as water. Hydrogen can be easily separated from Oxygen in water via Electrolysis.
This process is about 67% efficient Burning hydrogen combines with oxygen to f Read More Go to Site
Votes:0 IUPAC Commission on Atomic Weights and Isotopic Abundances . ATOMIC WEIGHTS OF THE ELEMENTS 2007 The table is based on the 2005 table at Pure Appl. Chem., 78 , 2051-2066 (2006) with 2007 changes to the values for lutetium, molybdenum, nickel, ytterbium and zinc. See Press relase for details. Mass number of the longest-lived isotope of hassium from Phys. Rev. Lett., 97 242501 (2006) http://www.chem.qmul.ac.uk/iupac/AtWt/ A PDF format copy of the 2005 table is available from the abstract World Wide Web version of atomic weight data originally prepared by G. P. Moss, from a file provided by D. R. Lide. Previous values may be consulted from the 1993 table , the 1995 table , the 1997 table , the 1999 table , the 2001 table or the 2005 table . The original paper should be consulted for details o Read More Go to Site
Votes:0 Actinium Electron Configuration General Properties Atomic Symbol Ac Atomic Weight 227.00 Element Number 89 Standard State -- Standard Type -- Date of Discovery 1899 Discoverer Debierne Physical Properties Oxidation States 3 Boiling Point 3470 K Melting Point 1324 K Density 10.07 g/cm³ Electron Configuration [Rn]6d1,7s2 Acid/Base Properties -- Crystal Structure Cubic, face centered Electronegativity 1 Heat of Vaporization -- Heat of Fusion -- Electrical Conductivity -- Thermal Conductivity 12 Wm-¹K-¹ (at 300 K) Specific Heat Capacity 0.120 Jg-¹K-¹ (at 300 K) First Ionization Potential 5.17 Atomic Volume 22.5 cm³/mol Atomic Radius 1.88 Å Covalent Radius -- Synthetic No Read More Go to Site
Votes:0 15th Intl.Recycled Aluminium Conference Platts Aluminum Symposium 2008 Charlie Cook to Speak at Alum. Assn. Spring Meet View More 4:07AM - 11/23/2007 US Appeals Court Orders New Fuel Economy Standards LOS ANGELES, November 16, 2007 (Reuters News Service) - A US appeals court Thursday ordered the federal highway commission to formulate new fuel economy standards for upcoming models of light trucks to take into account the environmental impact of their emissions. Rio Tinto Limited Announces Completion of Acquisition of 100% of Alcan Rio Tinto Limited announced that Rio Tinto Canada Holding Inc. (RTCH), an indirect wholly owned subsidiary of Rio Tinto, has acquired all of the common shares of Alcan Inc. (Alcan) not already owned by it by exercising its right under the compulsory acquisition.( Read More Go to Site
Votes:0 American Chemistry Council Chlorine Chemistry Division News Room Plastics Division Media Contacts Get Involved Health Drinking Water Disinfection Pool and Spa Disinfection Chlorine, Medicine and Public Health Food Safety and Surface Disinfection Wastewater Disinfection For Kids Sustainability Everyday Economy Search what is chlorine chlorine tips chlorine issues partnerships science center links publications acc chlorine chemistry Chlorine Chemistry Division From providing one of the most basic human needs?clean drinking water?to contributing to the production of high-tech first-responder equipment, sustainable building materials, food protection chemicals, computer microprocessor chips and more than 90 percent of prescription pharmaceuticals, chlorine chemistry is essential to everyday li Read More Go to Site
Votes:0 Bismuth, a hard, brittle metal, discovered in 1450. It occurs as the free element as well as the oxide, Bi 2 O 3 , called bismuth ocher , and as the sulfide, Bi 2 S 3 , called bismuth glance . Bismuth also occurs in lead ores, therefore, its principal commercial source is from the by-product of refining lead . Like antimony , bismuth expands when it solidifies. So, where sharp, well-defined edges of castings are important (i.e. in type metals ), bismuth and antimony are used as alloying agents. The melting point of bismuth is 271 o C, but form alloys that melt as low as 47 o C. Bismuth alloys have wide applications in automatic sprinkler systems, electrical fuses, and safety plugs in boilers where low-melting alloys are essential. Bismuth is also used as medicine. The active ingredient in Read More Go to Site
Votes:0 Bismuth.be English English Français Deutsch Español Italiano Português Dansk Nederlands ???????? Polski ??????? Türkçe Suomi Norsk Svenska Indonesia ??? ??? ?? ???? Sponsored Results Prodex Total Insulation for metal buildings, pole barns, and homes. www.Insulation4Less.com Top 10 Metal Buildings Leading Metal Buildings Companies Steel Buildings Ranked www.HelloMetro.com Metal Steel Buildings The Top Ten Steel Buildings Sites Reviews, Info and Prices www.Top10CanadianSites.ca Metal Buildings Metal Buildings sites Save on Metal Buildings PurchaseAce.com Steel Sale (800)630-2846 24/7 All Steel Buildings at Discount Sale Prices! www.freedomsteel.com Metal Buildings Canada Storage Buildings, Barns, Garages 35 Yr Warranty. Online Quotes! www.CrownSteelBuildings.ca US Metalcraft Steel Buildings, Read More Go to Site
Votes:0 Chemical Fact Sheet Calcium Chemical Abstract Number (CAS #) 7440-70-2 Analytical Methods 200.7 - 200.8 - 6010 - 6020 Molecular Formula Ca Synopsis Calcium - (L. calx, lime), Ca; at. wt. 40.078(4); at.
no. 20; m.p. 842 +/- 2 deg C; b.p. 1484 deg C; sp. gr. 1.55 (20 deg C);
valence 2. Though lime was prepared by the Romans in the first century
under the name calx, the metal was not discovered until 1808. After learning
that Berzelius and Pontin prepared calcium amalgam by electrolyzing lime
in mercury, Davy was able to isolate the impure metal. Calcium is a metallic
element, fifth in abundance in the earth's crust, of which it forms more
than 3%. It is an essential constituent of leaves, bones, teeth, and shells.
Never found in nature uncombined, it occurs abundantly as limestone (CaC03),
g Read More Go to Site
Votes:0 Characteristics of Nitrogen (N) Fertilizers Curtis E. Swift, Ph.D., Area Extension Agent (Horticulture) Colorado State University Cooperative Extension Tri River Area Fertilizer Name Analysis Source of N Moisture Dependence Low Temperature Response Residual N Activity Salt index (per N unit) Leaching Potential Quickly Available Ammonium-nitrate 33-0-0 ammonium nitrate minimal rapid 4-6 weeks 3.2 high Ammonium-sulfate 21-0-0 ammonium sulfate minimal rapid 4-6 weeks 3.3 high Ammonium-phosphate 18-46-0 diammonium phosphate minimal rapid 4-6 weeks 1.6 high Urea 46-0-0 urea minimal rapid 4/6 weeks 1.6 moderate Slow-Release Sulfur-coated urea 22-38% N urea moderate moderately rapid 10-15 weeks not applicable low ONCE 24-25% N urea, nitrate, ammonium nitrate moderate moderately rapid 15-38 weeks Read More Go to Site
Votes:0 AR-GON It's funny how it took scientists until 1894 to discover the most common inert gas on Earth. That's right; argon makes up a little over one percent of our atmosphere . Lord Rayleigh and Sir William Ramsay discovered and isolated argon gas. We joke. They could have never done it earlier because the technology wasn't available. In the same way that today's scientists are on the cutting edge of discovering elements with the atomic numbers over 110, they were on the cutting edge a century ago. Once isolated, argon was not that special. It has no smell and not color. It wound up as the last element in period three at position number eighteen. As usual, the last element in the row is an inert gas . Argon is in the same family as helium and neon. For a long time, scientists thought that Ar Read More Go to Site
Votes:0 A Trip Around the Carbon Cycle Hello! My name is Captain Carbon, the man of steel... well, I'm only 1.5% of steel, but you know what I mean. My days are full of exciting adventures such as defending atoms
and saving the world from those darn cubic zirconia (I know they look like the real thing,
but they're just not). Chemical Carousel is a web site designed to illustrate the nature
of the carbon cycle by taking you on an amazing adventure. On this adventure, we will explore both the traditional, scientific side of the carbon cycle as well as enjoy an inside tour through every process. The particular carbon cycle that we will explore employs many known processes such as photosynthesis, digestion, and combustion. In addition, some of the sites will contain information not widely known, such Read More Go to Site
Votes:0 You are here: About > Education > Chemistry > Facts & Pictures > Chemistry Feature Articles Chemistry Education Chemistry Essentials Periodic Table of the Elements Chemistry Glossary Science Pictures & Chemical Structures Worked Chemistry Problems Teach Yourself Chemistry Topics General Chemistry Tests & Quizzes Demos / Experiments Branches of Chemistry Homework Help Periodic Table & Elements Health & Safety Facts & Pictures Chemistry for Kids Everyday Chemistry Education & Employment Chemistry FAQs Molecules & Compounds Growing Crystals Science Fair Projects Buyer's Guide Before You Buy Top Picks Chemistry Sets Crystal Growing Kits Science Toys Product Reviews Tools Find a Job Online Degrees Yellow Pages Forums Most Popular Articles Latest Articles Help See photos of the Read More Go to Site
Votes:0 Periodic Table of the Elements Return to the Main CHEMystery Page With so many elements already found and the possibility of more being discovered,
chemists needed a way to organize them.
Many systems were tried in order to make some sort of pattern in their properties to match the table.
The modern periodic table, based on atomic number and electron configuration, was created primarily by a Russian chemist, Dmitri Ivanovich Mendeleev, and a German physicist, Julius Lothar Meyer, both working independently.
They both created similar periodic tables only a few months apart in 1869. Mendeleev created the first periodic table based on atomic weight.
He observed that many elements had similar properties,
and that they occur periodically, hence the name, periodic table.
From this, he made the p Read More Go to Site
Votes:0 CHLORINE IN THE WORLD CHLORINE IN NATURE Chlorine is quit abundant in nature, there is more chlorine (0.19%) in the earth crust than carbon (0.08%). Almost all of that chlorine is in bounded form: salt in the oceans and in thick layers all around the world contains sixty percent of chlorine, the rest is sodium. Huge amounts - but small concentrations - of bounded chlorine (salt and hydrochloric acid) are travelling with the winds from sea to land. So also on land you will find chlorine everywhere in air and ground. Small parts of the hydrochloric acid are oxidised to elementary chlorine, which gives the nice looking green roofs with copper on buildings near the sea. All life on earth started in salted oceans and still nearly all life on earth needs salt to survive. Too much salt is a deadl Read More Go to Site
Votes:0 Mission CDA Staff CDA Offices Press Room Membership Member Login Architecture Automotive Electrical Building Wire Energy Efficiency Power Quality Tube, Pipe & Fittings Fuel Gas Industrial Seawater Machined Products Telecommunications Copper Compounds Antimicrobial Copper Alloy Surfaces Find Suppliers of Copper and Copper Alloys Technical Reference Library Standards & Properties Application Directory Market Data Publications List Discover Copper Magazine Copper Facts Copper Through The Ages The Statue Of Liberty Copper Production The History of Copper In The U.S. 60 Centuries Of Copper Recycling Copper Copper In Drinking Water Copper And The Natural Environment Copper In the Arts Copper In Your Home Have a Question About Copper? Ask Us! What's New? Copper in the Arts November '07 - Learn ho Read More Go to Site
Votes:0 Simply Professional We Support Make Poverty History!! Crosswinds Customer Testimonial of the Moment Jenn and Tony Both of you need to be commended for your excellent work and responsiveness to queries and problems. I have been with Crosswinds for a couple of years and have seen the progress you have made in terms of offering better and better services, at an excellent price. The Pro packages are an excellent value for the amount and quality of products provided. I hope you keep up the good work. I plan to stay with you and take advantage of more and more of your services into the foreseeable future. Wayne. A Fact About Testimonials - Wayne 30 Day Money Back Guarantee You have 30 Risk Free days to try Crosswinds! Read more... Home About Us Contact Us Privacy Policy Terms of Service Refund P Read More Go to Site
Votes:0 Pierre Curie (1859-1906) and Marie Sklodowska Curie (1867-1934) On a New Radioactive Substance Contained in Pitchblende [1] note by M. P. Curie and Mme. S. Curie, presented by M. Becquerel Comptes Rendus 127 , 175-8 (1898) translated and reprinted in Henry A. Boorse and Lloyd Motz, eds., The World of the Atom , Vol. 1 (New York: Basic Books, 1966) Certain minerals containing uranium and thorium (pitchblende, chalcolite, uranite) are very active from the point of view of the emission of Becquerel rays . In a previous paper, one of us has shown that their activity is even greater than that of uranium and thorium, and has expressed the opinion that this effect was attributable to some other very active substance included in small amounts in these minerals. [2] The study of uranium and thorium Read More Go to Site
Votes:0 DALTONS HYDROGEN POWERD CAR PAGE with some help from justin Hydrogen, the first element on the periodic table, is a good source of fuel because we have an almost unlimited supply of it and because it is clean burning. Manny people and corporations already have working hydrogen powerd cars includeing Mazda, Daimler Benz and Chrysler. The car made by Mazda uses a rotary combustion engine that burns the hydrogen like a normal car burns gasoline. The car made by Daimler Benz uses a fuel cell to generate electricity which is then used to power the electric motors that run the car. Chrysler's car makes its hydrogen onboard by removing it from the gasoline stored in its fuel tank. The car then uses a fuel cell, like the Benz, to generate electricity. The Mazda and the Daimler Benz are both very p Read More Go to Site
Votes:0 Periodic Table of Elements PDF (Letter) PDF (Legal) PDF (A4) Periodic Table PNG About Contact Advertise Poster Afrikaans ??????? ????????? ????? Dansk Deutsch ???????? English Esperanto Español ????? Suomi Français ????? Íslenska Italiano ??? ??? Latina Nederlands Norsk Polski Português ??????? Svenska Kiswahili ??? Türkçe ?? (?) ?? (?) Series Properties Orbitals Isotopes Names Electrons Wide 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 1 H Hydrogen 1.0079 4 1 Atomic # Sym bol Name Atomic Mass Alkali metals Actinoids Alkaline earth metals Poor metals Transition metals Nonmetals Lanthanoids Noble gases C Solid Hg Liquid H Gas Rf Unknown State at Radius Melting Point Density Boiling Point Conductivity Electronegativity Heat Electron Affinity Abundance Ionization Discovered l = m = n = 7s ? Read More Go to Site
Votes:0 Concerning the Early History of Planet Earth In a previous article, The Origin of theSolar System, some of the many peculiarities of our solarsystem and its origins were mentioned briefly. The sun for instanceis 98% helium and hydrogen, the giant planets are mostly gaseous,but the terrestrial planets including the earth are almost entirelymade up of heavier elements-earth is 90% iron, silicon,oxygen and magnesium. The most popular current secular scientific explanation forthe origin of the solar system and the planets suggests that everythingformed by a cold accretionary process involving the coalescence,accretion and compression of the abundant gas and dust moleculesthat "fill" empty space most everywhere. The Bible, on the other hand describes the formation of theear Read More Go to Site
Votes:0 Related Searches: Earth Picture | Earth and Moon | Transit of Earth from Jupiter | Earth or Mars | Earth Solar Sponsored Listings Secret Satellite TV on PC Shocking discovery they don't Want you to know. www.secretsatellite.com Live Earth Products, Inc. Manufacturing pure fulvic acid from humic shale from The Rockland Mine www.livearth.com Live Earth In Pictures Photos from the global event to promote environmental awareness www.thefirstpost.co.uk Satellite Maps of Earth Find information about Earth Earth maps - Online Guide www.ABC-Earthmaps.com Planet Earth - BBC ver. Narrated by David Attenborough 90 mins more than Discovery Channel www.amazon.com 3D Earth Screensaver Watch Realistic Animated 3D Earth On Your Desktop. Free Download! www.CrawlerTools.com/3DEarth Earth Photos See 5 Op Read More Go to Site
Votes:0 Click HERE
to view a picture of Neon Lights in Las Vegas, Nevada (Too
large to add to this page; 100+KB) Atomic Information on Neon Atomic Number 10 Atomic Symbol Ne Atomic Weight 20.1797 Group/Family No. 18 or Noble Gases Electronegativity Approximately 4.50 Charge None Standard State Gas <-----
Illustration by Omar Yassin History
of Neon Source
of Neon Compounds Properties Uses
of Neon Isotopes Cost/Handling LINKS The
History of Neon (Ne) Neon was discovered in 1898 by two
British chemists by the names of Sir William Ramsay and Morris W. Travers.
It was found in London, England. It was found as a small fraction of liquefied
crude argon from the air. When they found that it had a glow when it was
electrically stimulated, they knew that they were dealing with a new element.
These two ch Read More Go to Site
Votes:0 What's New Site Map NASA Homepage Search: HOME Science Special Exhibit Satellites and Data Teachers' Corner Ask an Astrophysicist Dictionary Resources Feedback Imagine
Home | Science | Advanced Science | Current Page Additional Links Cool Fact about this topic! Give Me additional resources! For Educators NCTM & NSES Standards Show me related lesson plans How Did the Elemental Composition of the Universe Evolve? Why do we observe the types and quantities of chemical elements in the Universe revealed by astronomy ? This is one of the most fundamental questions facing
astronomers. Determining how the elements were created - the field of
nucleosynthesis - draws from a wide range of studies: from the Big Bang to the
formation and evolution of our solar system. Light elements (those up to l Read More Go to Site
Votes:0 Question #1: H is the elemental symbol for: Hydrogen Halogen Helium Mercury Potassium Question #2: He is the elemental symbol for: Mercury Hafnium Hydrogen Helium Neon Question #3: Li is the elemental symbol for: Iodine Iron Lithium Lead Silver Question #4: Be is the elemental symbol for: Barium Beryllium Bromine Lead Boron Question #5: B is the elemental symbol for: Barium Boron Lead Beryllium Bromine Question #6: C is the elemental symbol for: Carbon Chlorine Calcium Cobalt Copper Question #7: N is the elemental symbol for: Nobelium Nickel Neon Sodium Nitrogen Question #8: O is the elemental symbol for: Neon Tin Iodine Oxygen Lead Question #9: F is the elemental symbol for: Francium Flourine Phosphorus Fluorine Iron Question #10: Ne is the elemental symbol for: Neon Nickel Nitrogen Nobel Read More Go to Site
Votes:0 .mwsb{ background-color: 3366CC; border-width: 1px; border-color: 3366CC; border-style: solid; } .mwst, .mwst a{ font-family: arial,sans-serif; font-size: 8pt; background-color: white; color: blue;} Free Web Hosting Provider - Web Hosting - E-commerce - High Speed Internet - Free Web Page Search the Web About
me INDIA LINKS CHEM QUIZ E-MAIL Sign
up View
Book Buy
CDs Click Here to Visit our Sponsor (+0400hrs
GMT) I advise you to have quick look at
the Terminology Page before you surf down. 87) FRANCIUM: Symbol Fr Etymology after the
discoverer's country - FRANCE Atomic Number 87 Atomic Mass [223] Electron Config. 2,8,18,32,18,8,1 Group Name I-A Period Name 7 Type of bond Ionic Bond Valency 1 Isotopes(At.m.) 211, 212,
217, 218, 219, 220, 221, 222, 223(AcK). 88) RADIUM: Symbol Ra Etymology de Read More Go to Site
Votes:0 Site search Sitemap Last site update 22 November 2007 Email a friend Print page Chlorine Online Home European chlorine industry What is chlorine? News room Chlorine compounds of the month European Chlorinated Solvent Association Chlorinated Paraffins Sector Group Library Glossary FAQs Useful links About Euro Chlor Contact us Access keys Looking for facts on chlorine, caustic soda or chlor-alkali industry? Chlorine Online provides facts on chlorine chemistry - describes the elements of chlorine and how it is made from electricity, salt and water. It includes information on PVC, polycarbonate, polymers, pharmaceuticals, solvents and other products such as bleach and swimming pool disinfectants, silicon chips and auto parts, as well as information on chlorine effects on human health and the e Read More Go to Site
Votes:0 Scientific Instrument Services, Inc. Supplies and Services for Mass Spectrometers, Gas Chromatographs and Liquid Chromatographs Search: Home Products Catalog Services Machining References Customers Dealers Company Application Notes | Adsorbent Resins | MS Tips | Newsletter | MSDS | MS Tools Alphabetic Listing of Elements Exact Masses and Isotopic Abundances Based on the Carbon 12 Standard The following data was collected from a compillation of data from
the CRC Handbook and other references. If any errors or corrections
are notes please advise us and we will make the corrections. Name Symbol Mass Abund. Symbol Mass Abund. Symbol Mass Abund. ---------- ------- ---------- ------ ------- ---------- ------ ------- ---------- ------ Aluminum Al(27) 26.981541 100.00 Antimony Sb(121) 120.903824 5 Read More Go to Site
Votes:0 The picture above is a false color image of about 10,000 Fr atoms in a laser trap. Francium is: a relatively young member of the periodic table SEE HISTORY the heaviest of the simple atoms. SEE FACTS radioactive, the most unstable of the first 103 elements SEE FACTS able to be trapped SEE TRAPPING available about once a month at Stony Brook SEE HOW TO MAKE IT an interesting atom to study SEE SPECTROSCOPY a laboratory in itself SEE FUTURE PLANS showing off some of its properties for the first time SEE BIBLIOGRAPHY the subject of study by a Stony Brook team SEE TEAM PLAYERS Link to Orozco Group Home Page Read More Go to Site
Votes:0 Gas Laws Welcome to Gas Laws, dedicated to teaching the ideal gas behavior. If you are interested in understanding the relationships among the properties of the ideal gas, or familiarizing yourself with the equations for related calculations, feel free to make use of our services. Just a couple of notes before you begin: First, to insure that our focus topic, Gas Laws, is covered comprehensively, no other topics of chemistry or other sciences will be discussed to great detail here. And second, the following are the components of what is known as the Kinetic Molecular Gas Theory: 1. Gases are considered the simplest state of matter 2. Gases are composed of molecules in random order 3. Molecules collide elastically 4. Molecules collide with walls of container to exert pressure 5. A zero forc Read More Go to Site
Votes:0 | Healing with copper | MP3s | Loans | Jobs | Music | Internet | Flowers | Shopping | Fitness | Education | healingwithcopper.com Language: English Français Deutsch Español Italiano Português Dansk Nederlands ???????? Polski ??????? Türkçe Suomi Norsk Svenska Indonesia ??? ??? ?? ???? For healing with copper try these sponsored results: Copper Healing Bracelet Adorn Yourself. Explore Copper Healing Bracelet! Shopzilla.com/CopperBracelets Magnetic Bracelets Affordable Handmade Magnetic Bracelets, Anklets and Necklaces www.MagneticHematiteShoppe.com Magnetic Jewelry Magnetic Products Bracelets, Necklaces, Supports www.magnetichealth.ca Magnetic Therapy Magnetic Therapy sites Save on Magnetic Therapy PurchaseAce.com Magmetic & Copper Therapy SABONA Bracelets, Your Leader In Style & Comfort. R Read More Go to Site
Votes:0 The Academic Homepage for High School Students Subject Guides English Foreign Languages Math Science U.S. History World History NOV 23, 2007 Crossword Puzzles Daily News Quiz SAT Prep Question Today's News Weather Forecast Word of the Day Question of the Day Who is the senior U.S. Senator representing New York? Answer Google Search Reference Sites Country Profiles Social Issues Street Maps Translator Tool Unit Conversions World Facts World Maps Reference Tools Directories College Directory High Schools Public Libraries Guidance College Guide Study Guides Study Skills Tips About High School Ace High School Ace is the trusted web guide to free quality educational resources for teens. High School Ace is financially supported by Quiz Hub and Advertising Sponsors . Only approved not-for-profit Read More Go to Site
Votes:0 A Short History of Metals By Alan W. Cramb Department of Materials Science and Engineering Carnegie Mellon University Process Metallurgy is one of the oldest applied sciences . Its history can be traced back to 6000 BC. Admittedly, its form at that time was rudimentary, but, to gain a perspective in Process Metallurgy, it is worthwhile to spend a little time studying the initiation of mankind's association with metals. Currently there are 86 known metals. Before the 19th century only 24 of these metals had been discovered and, of these 24 metals, 12 were discovered in the 18th century. Therefore, from the discovery of the first metals - gold and copper until the end of the 17th century, some 7700 years, only 12 metals
were known. Four of these metals, arsenic, antimony , zinc and bismuth , Read More Go to Site
Votes:0 Hydrogen and the Alkali Metals Um...hydrogen isn't a metal, is it? No, it isn't; hydrogen itself is not considered to be one of the alkali metals. Its place in the table does make sense, though; hydrogen tends to behave like the other members of its column in chemical reactions. For example, all these elements combine with oxygen to form compounds with the formula X 2 O. I'm not quite sure what you mean by X 2 O. X is a stand-in for the chemical symbol of any of the elements in this column. In the case of hydrogen, the formula becomes H 2 O, which of course is just water. Later on , you'll see exactly why hydrogen belongs in this particular place in the periodic table. > Read More Go to Site
Votes:0 o i-mass guides : Index | Classic Articles | Definitions | History | Movies | Nobel Prizes | Protocols | Resources | Techniques | Troubleshooting | Tutorials Past Features Carbon Dating of Cave Art - Mass Spectrometry dates prehistoric cave paintings in southern France... On the Nose - MS shows mice prefer to mate with partners that express different MHC genes. .. Special Delivery - A mass spectrometer is delivered to the international space station... Molecular Hitchhiking on a Comet - Mass spectrometry shows molecules can survive an impact with Earth... Mass Spectrometry Unearths Mexico's Maize - Accelerator MS provides evidence of early agriculture in Mexico... Mass of the Universe -Scientists may finally have a reliable estimate of the mass of the universe... Airport Security - Ion mob Read More Go to Site
Votes:0 Reactive Reports #69 October 2007 From David Bradley Science Writer and Advanced Chemistry Development Reactive Science News How Cannabis Works Why does cannabis get a person "high"? What is it about the psychoactive component in marijuana, THC, or tetrahydrocannabinol, that exerts its special effects? An Economical Hydrogen Economy If the hyperbole is to be believed, hydrogen gas will be one of the most important fuels of the future. The Venusian Greenhouse A rare form of carbon dioxide in which one oxygen atom contains ten neutrons instead of the usual eight could be to blame for the searing greenhouse effect on the planet Venus. Chocoholics Anonymous It probably will not come as a surprise that scientific research funded by chocolate makers NestlÉ has demonstrated a link between our lov Read More Go to Site
Votes:0 Materials Science: Liquid Germanium Next Materials Science Home The properties of liquid semiconductors are important from a
technological point of view. Since most semiconductors are grown from the
melt, the transport coefficients of the liquid, such as the diffusion
constant, are needed as input in the fluid-dynamic equations used to
model crystal growth. However, these properties are difficult to
determine experimentally. Typical experiments that measure such diffusion
constants suffer from uncertainties arising from the contributions of
convection and of gravity. These uncertainties can be overcome, in
principle, by carying out the experiments in microgravity.
One way to obtain microgravity, is to do experiments in outer space and
this is the reason, why NASA is interested in this prob Read More Go to Site
Votes:0 Environmental , Chemistry & Hazardous Materials News, Careers & Resources Periodic Table of the Elements Skip to ad free log in Skip to Periodic Table Skip to elements sorted by links (more useable to non-graphical browsers and handhelds) Skip to site menu on this page. This periodic table of elements provides comprehensive data on the chemical elements including scores of properties, element names in many languages and most known nuclides (Isotopes). Below the table there is a " Chemical Elements Sorted By " section with links that will sort chemical elements by various properties. Newest Articles and News Editorial: China and the environment: The U.S. could learn a lot from China Oct. 29, 2007 China may have a long way to go on their environmental record, but they are aggressively tackli Read More Go to Site
Votes:0 PERIODICITY (THE PERIODIC TABLE) PERIODICITY (THE PERIODIC TABLE) Alvin Wilson Wendell Phillips High School 244 East Pershing Road Chicago, IL 60653 1-312-924-8284 BEHAVIORAL OBJECTIVES: 1. Show the historical importance of the Periodic Table as a predictive device. 2. Relate chemical properties of elements to their position in the Periodic Table. 3. Describe trends of the various properties in the Periodic Table. 4. Describe the idea that the periodicity of the elements is probably the most important unifying principle in chemistry. 5. List various families of elements along with specific similarities and differences of properties within the families. 6. Predict physical and chemical properties of elements by using the Periodic Table. 7. Predict oxidation numbers of elements through use o Read More Go to Site
Votes:0 Matching, flashcards, concentration, word search 40 Element Symbols Learn the symbols for forty of the most common chemical elements. Tools See a list of terms used in these activities. Matching Flashcards ( Java / non-Java ) Concentration Activity created by: Dyann Schmidel This activity was created by a Quia Web subscriber. To learn how to make your own, just like this, click here . Read More Go to Site
Votes:0 Matching, flashcards, concentration, word search Chemical Elements and their Symbols Learn the elements and their symbols Tools See a list of terms used in these activities. Matching Flashcards ( Java / non-Java ) Concentration Word Search Activities created by: Quia Editors This activity was created by a Quia Web subscriber. To learn how to make your own, just like this, click here . Read More Go to Site
Votes:0 Frequently Asked Questions About Radon G eneral ( Glossary ) Health risks Testing Mitigating Regional What is radon? Are radon levels something I really need to be concerned with? What is the most accurate way to measure radon levels? Can anything be done to reduce the hazard associated with radon? Are there areas where radon is likely to be high? Where does radon come from? What is it about radon that makes it harmful? Does the Minnesota Radon Project meet EPA standards? Who can mitigate my radon problem? Is high indoor radon unique to Minnesota? What does pCi/L mean? Is radon-related lung cancer fatal? Why is my home "high" while my neighbor's home is "low?" What levels of radon are acceptable? Are there any other health effects with radon? Where can I get electronic Read More Go to Site
Votes:0 Jump to main content. Radon Recent Additions | Contact Us Search: All EPA This Area You are here: EPA Home Air Indoor Air Quality Radon Test Your Home for Radon -- It's Easy and Inexpensive The U.S. Surgeon General and EPA recommend that all homes be tested. Read about radon health risks. [En Espa?ol] You can test your home yourself or hire a professional. [En Espa?ol] Fix your home if you have a radon level of 4 pCi/L or more [En Espa?ol] . Discounted radon test kits are available from the National Safety Council (or call 1-800-SOS-RADON). Some home improvement stores sell test kits. To find a qualified testing or mitigation contractor, contact your state radon office (see our list of state contacts) or either of the private radon proficiency programs . Read "A Citizen's Guide To Rad Read More Go to Site
Votes:0 Department of Physics and Astronomy !--> This WEB page is about the fullerene-related research in Laszlo Mihaly's laboratory at the Physics Department in SUNY @ Stony Brook . Our campus is located on Long Island , New York. Here are short descriptions of how to get to Stony Brook , to the Physics Building and to the seminar room . We study the fundamental properties of Fullerenes (Carbon-60) and doped fullerenes . A recommended review paper on these materials is "Electronic properties of doped fullerenes , by L. Mihaly and L Forro, (Reports on Progress in Physics, 64, 649-700 (2001)) . Many of our experiments are carried out at Stony Brook, and we also do measurements at the National Synchrotron Light Source at Brookhaven National Laboratory . Links to past and present members of the group Read More Go to Site
Votes:0 Return to "Technical
Information" Home Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 THE EVOLUTION OF AN ALLOY ANTHONY P. ECCLES Managing Director: Apecs Investment Castings Pty. Ltd. MELBOURNE AUSTRALIA This paper was presented at the 1998 12th annual Santa Fe Symposium ABSTRACT Definition of Reason for Approach to ALLOYING PRECIOUS METALS With examples of 1. 9ct to 14ct silicon bearing gold master alloy. 2. 18ct Palladium White Gold 3. Carat Gold / Palladium spring master alloys. 4. Fire-scale free, tarnish resistant, Sterling Silver KEYWORDS Alloy, Carat Gold, Casting, Colour, Copper, Design, Element, Fashion, Fire-scale, Formula, Gold, Germanium, Investment Casting, Master Alloy, Nickel, Palladium, Platinum, Porosity, Precious Metals S Read More Go to Site
Votes:0 Scientific Programs and Opportunities Formation of the Elements 1 "The study of the origin of the chemical elements embraces both
nearby stars and galaxies and the most distant quasars we can observe.
The properties of stars and the interstellar gas in our own Galaxy
and nearby galaxies enable us to probe the way in which the chemical
elements are built up through the cosmic cycle of the birth, life,
and death of stars in systems at the present time. The study of similar
processes, but at much earlier cosmological epochs, can be carried out by observing the chemical abundances of the elements in those galaxies
which can be observed in absorption against the continuum emission of
the most distant quasars. These absorption systems provide important
clues about the build up of chemical elemen Read More Go to Site
Votes:0 Explore the Periodic Table and Families of Elements Some Important Facts The History of the development of a systematic pattern for the elements includes the work of a number of scientists such as John Newlands, who in 1863 proposed the idea of repeating occurances of properties.Dmitri Mendeleev in 1869 proposed a table containing seventeen columns and is usually given credit for the first periodic table since he arranged elements in groups according to their atomic weights and properties. In a revision of his table in 1871 he arranged some elements and proposed a table of eight columns, obtained by splitting each of the long periods into a period of seven elements, an eighth group containing the three central elements (such as Fe, Co, Ni), and a second period of seven elements. The first Read More Go to Site
Votes:0 Next Previous
Contents The R. Buckminster Fuller FAQ Christopher J. Fearnley, cjf@CJFearnley.com v.1.3.0, 10 May 1999 This is the Frequently Asked Questions and Answers (FAQ) Resource
on R. Buckminster Fuller . It is based primarily on the history of the
discussions, interests, and needs of the readers of the BITNET mailing
list Geodesic and its USENET gateway bit.listserv.geodesic (I will
use the word ``GEODESIC'' or sometimes simply ``the list'' to refer to
these two gatewayed discussion areas). So some of the information could
be in error (especially addresses and phone numbers). Please send all
errors and suggestions to the FAQ maintainer, Chris Fearnley
( cjf@CJFearnley.com ). 1. Introduction 2. Synergetics 2.1 What is a tetrahedron (tetra), octahedron (octa), and an icosahedron (icos Read More Go to Site
Votes:0 Weekly Digest Newsletter Nuclear Power for Electricity Radioactive Wastes Other Aspects of Fuel Cycle Radiation & Health Plant Safety New Reactor Technology Avoiding Weapons Proliferation Resources & Uranium Market Particular Countries Mining & Environment Climate Change Non-Electricity Uses of Nuclear Energy General/Sundry Glossary News : Education Resources : Briefing Papers : Uranium in Australia : Search Frequently Asked Questions : Opinion : Other Nuclear Links Uranium Information Centre Serving the web since 1995 News Education Resources Briefing Papers Uranium in Australia Search the Information Centre About UIC & AUA WNA Reactor Database AUA Fact Sheet Guide for Media Guide for Analysts Australian Uranium Association A.B.N. 30 005 503 828 GPO Box 1649, Melbourne 3001, Australia pho Read More Go to Site
Votes:0 Minerals Information Home || Commodity || Country || State || Products || Contacts || Statistical Compendium || Cobalt Statistical Compendium This publication includes data through 1990. For recent statistics, please go the the Cobalt Statistics and Information page. Cobalt is a strategic and critical metal used in many diverse industrial and military applications. The largest use of cobalt is in superalloys, which are used to make jet engine parts. Cobalt is also used in magnetic alloys and in cutting and wear-resistant materials such as cemented carbides. The chemical industry consumes significant quantities of cobalt in a variety of applications including catalysts for petroleum and chemical processing; drying agents for paints and inks; ground coats for porcelain enamels; decolorizers Read More Go to Site
Votes:0 Spectra! If you want to see visible emission line spectra of some elements and light
sources, you are at the right place! (Don's Spectra Site is still under
construction, latest additions 7/4/99.) Skip to Other Spectra Sites Please beware that reproduction accuracy is limited. In order to maximize speed
and compatibility with various graphical web browsers, I have largely limited
myself to the 216 colors used by Netscape running under Windows with 8 bit
video. 125 of these colors have nonzero use of all three primaries, about
12-15 are obviously non-spectral magentas and purples, and and a few others
are questionable purplish colors. That leaves only about 75 colors to use,
including bright and dark shades. In addition, the color phosphors used in
computer monitors are not capable of accur Read More Go to Site
StudySphere is an outstanding resource for homework help, special education, music school, cooking school, charter schools, art schools, technical schools, traffic school, film schools, catholic schools, etc.