background preloader

Eric Weisstein's World of Chemistry

Eric Weisstein's World of Chemistry

Chemistry News Feb. 15, 2024 — Scientists have developed a new method to measure and remove sulfate from water, potentially leading to cleaner waterways and more effective nuclear waste ... Feb. 14, 2024 — Researchers have succeeded in biomanufacturing from chemically synthesized sugar for the first time in the world. With refinement of this technology, one can envision a future society in which the ... Feb. 13, 2024 — Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. These new elements have high atomic ... Feb. 13, 2024 — The properties of supramolecular polymers are dictated by the self-assembled state of the molecules. Feb. 13, 2024 — Scientists have discovered that a known practice in information technology can also be applied to chemistry. Feb. 9, 2024 — Hydrogen stored in hydrogen boride sheets can be efficiently released electrochemically, report scientists.

WebElements Periodic Table of the Elements Ocean trench: Take a dive 11,000m down Icy cold, pitch black and with crushing pressures - the deepest part of the ocean is one of the most hostile places on the planet. Only three explorers have made the epic journey there: 11km (seven miles) down to the bottom of the Pacific Ocean's Mariana Trench. As a new wave of deep-sea exploration begins, take a look at the mysterious world that they will be plunging into. Pressure Test: Diving 100m down With the help of some polystyrene heads, science reporter Rebecca Morelle finds out what happens at the pressure experienced 100m below sea level. Pressure Test: Diving 1,000m down The BBC's Rebecca Morelle reveals what happens to a polystyrene head as it is subjected to the pressure 1,000m below the waves. Atmospheric diving suit They may look as clunky as a suit of armour but some atmospheric diving suits (ADS) can enable people to reach depths of up to 600-700m. Elephant seal - expert diver This southern elephant seal is a fantastic diver and reach depths of up to 2,000m.

CERN Physicists Trap Antimatter for a Record-Breaking Quarter Hour, Observe It Scientists working on the Antihydrogen Laser Physics Apparatus (ALPHA) at Cern's particle physics laboratory had very exciting quarter hour recently. The team conjured and contained atoms of antihydrogen for a full 1,000 seconds--that's nearly 17 minutes and 10,000 times longer than they were previously able to keep antimatter around before it disappeared in burst of particle-on-particle annihilations. Antihydrogen is the antiparticle to hydrogen (but you might have guessed that), and is of interest to researchers because, basically, we don't know a whole lot about antihydrogen specifically and antimatter generally. That's because it's notoriously difficult to study. Put antihydrogen and hydrogen in contact and you end up with nothing. To keep antimatter and matter separate, the ALPHA team has been experimenting with magnetic antimatter traps that allow them to keep a cloud of anti-particles in existence for very short periods of time. [New Scientist, Technology Review]

50 Awesome Chemistry Videos For The Busy Science Teacher Though we don’t often recognize it, chemistry defines nearly every element of our everyday lives. From the reactions that fuel the sun to the biology of our bodies to the technology in our gadgets, chemistry is at the heart of everything we do and is the central science that unites biology, physics, geology, astronomy, medicine, and countless other fields. Yet chemistry doesn’t always get the credit and recognition it deserves for playing such an awesome role in, well, everything. If you’ve been slighting chemistry, there’s no better time to give the field the credit it deserves than National Chemistry Week. Founded in 1987, the week-long event has helped bring awareness to the role chemistry plays both in our lives today and in our future. Amazing Reactions and Experiments From incredible explosions to chameleon-like color changes, these experiments and demonstrations showcase some of the coolest reactions in chemistry. Lectures Courses Fun Miscellaneous

Royal Society of Chemistry | Advancing the Chemical Sciences UNC Chemistry Fundamentals An Interactive Educational Exercise Because of special formatting tags needed to display exponents, this site is best viewed with Netscape 3.0 or higher. If needed, use the link under Useful Materials to download Netscape About the Chemistry Fundamentals Course This exercise is designed for anyone who wants an introduction or review of the fundamentals of chemistry that will be used in freshman level chemistry classes. This interactive course was used for the first time during the summer of 1997. Evaluations from last year's materials suggested that, while the mathematics and calculator sections were useful, one of the most appreciated benefits of the materials was the review of basic high school chemistry. Currently, this site is used as a resource that can be beneficial to any student that is enrolled in a freshman chemistry course. About these materials How to use these materials The basic procedure is as follows:Take the pre-test for a certain sections. About the Sidebar

My favourite toxic chemicals #toxiccarnival « Endless Possibilities v3.0 Sciencegeist has set the challenge for a bloggy carnival for us chemists, aimed in part to combat ‘chemophobia’. You know, the ‘oh noes teh chemicalz iz teh badz’ attitude that’s pretty pervasive. I personally would just give up on the anti-chemical thing and move on, but that’s another blog post. The brief seems largely to be to pick a chemical that might be notable for its toxicity and point out all the really great stuff it does, chemistry that we couldn’t really live without. What to pick? One such chemical would be hydrogen fluoride, or hydrofluoric acid in aqueous solution. If you’re anything like me, you probably read the label on household cleaning products and view the ‘wear gloves’ indications with a degree of scepticism. So why is it in household products? I’ve worked in labs where HF has been in use for a number of reactions. Hydrogen fluoride gas is a severe poison that may immediately and permanently damage lungs and the corneas of the eyes.

CLUSTER - divulgación científica All Nobel Prizes in Chemistry The Nobel Prize in Chemistry 2002 "for the development of methods for identification and structure analyses of biological macromolecules" John B. Fenn and Koichi Tanaka "for their development of soft desorption ionisation methods for mass spectrometric analyses of biological macromolecules" Kurt Wüthrich "for his development of nuclear magnetic resonance spectroscopy for determining the three-dimensional structure of biological macromolecules in solution" The Nobel Prize in Chemistry 1993 "for contributions to the developments of methods within DNA-based chemistry" Kary B. "for his invention of the polymerase chain reaction (PCR) method" Michael Smith "for his fundamental contributions to the establishment of oligonucleotide-based, site-directed mutagenesis and its development for protein studies" The Nobel Prize in Chemistry 1942 No Nobel Prize was awarded this year. The Nobel Prize in Chemistry 1941 The Nobel Prize in Chemistry 1940 The Nobel Prize in Chemistry 1933 Alfred Werner Victor Grignard

Supersonic Stereo