Chemistry | 5.112 Principles of Chemical Science, Fall 2005 | Video Lectures | Lecture 26: Molecular Orbital Theory
Database of Periodic Tables
There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach. Periodic Tables providing data about the chemical elements, rather than novel formulations: Theo Gray's Photographic Periodic Table Theodore Gray's Periodic Table.Com is a live version of what is generally regarded as the most beautiful periodic table to be developed so far. Theo is an enthusiast and a collector, and he uses the power of Mathematica (he is a co-founder of Wolfram Research) to drive his astonishing website. Top of Page WebElements: The Periodic Table on The Web As of Dec. 2012, there are 118 chemical elements, according to the excellent webelements periodic table web site: The number of known elements does change. 94 Elements: The Stuff of Everything The stories of the elements are the stories of our own lives.
Spray-on liquid glass is about to revolutionize almost everything
(PhysOrg.com) -- Spray-on liquid glass is transparent, non-toxic, and can protect virtually any surface against almost any damage from hazards such as water, UV radiation, dirt, heat, and bacterial infections. The coating is also flexible and breathable, which makes it suitable for use on an enormous array of products. The liquid glass spray (technically termed “SiO2 ultra-thin layering”) consists of almost pure silicon dioxide (silica, the normal compound in glass) extracted from quartz sand. Liquid glass was invented in Turkey and the patent is held by Nanopool, a family-owned German company. The liquid glass spray produces a water-resistant coating only around 100 nanometers (15-30 molecules) thick. Food processing companies in Germany have already carried out trials of the spray, and found sterile surfaces that usually needed to be cleaned with strong bleach to keep them sterile needed only a hot water rinse if they were coated with liquid glass.
17 Science Experiments That Will Make Childhood Unforgettable
We care for our children every day. But in 20 years it won't be the everyday tasks we performed for them that they'll remember. Instead, it will be the moments we spent together. Bright Side put together a selection of the 16 best science experiments that will both tear you away from your concerns and fascinate your children. Hard liquid You will need: Starch Water A plastic container Food coloring, a wooden board, a hammer, and some nails for additional experimentation Mix the water and the starch together in the container until the mixture turns viscous in its consistency. Homemade kinetic sand 4 teaspoons of boric acid 2 teaspoons of ordinary paper glue 1 teaspoon of coloring 100 g of chinchilla bathing sand A glass bowl Pour all the liquid components into a bowl, add the sand, and thoroughly mix them together. Glowing water 2-3 highlighters Pliers A measuring cup Tweezers A UV Light Pour water into a few glasses (2-3 in number), filling them about 2/3 of the way. Making a Pharaoh snake
The USGS Water Science School: All about water!
USGS Home Contact USGS Search USGS The USGS Water Science School The USGS Water Science School Welcome to the U.S. Interactive Water Cycle diagram (three age levels) Water Cycle for Schools | Teacher resources The USGS Water Resources of the United States provides water information that benefits the Nation's citizens. Accessibility FOIA Privacy Policies and Notices U.S.
AP Chemistry Review Activities
AP Chemistry Interactive Review Activities In keeping with the new framework for AP Chemistry beginning in 2013 - 2014, I am indicating here if the topic to which a review activity relates has been dropped from the curriculum. It will be identified as excluded (Excluded) to indicate that the College Board has specifically excluded it. I will leave the reviews here, however, in case some of you find them useful. These are not graded assignments. They are intended only as practice of concepts and vocabulary that are essential to your success in this course. Each time you reload the activity, the problems will be in a different order, and the answers will be reshuffled!
UPDATE #2: NEW! Periodic Table of Criminal Elements | PlanetPOV
I need your help because my ideas are drying up. This is what I have so far and I’ve thought of about a dozen more to add that I can think of including the SCOTUS judges, and usual rabble of right wing talking heads. I need help identifying the lying and corrupt politicians, blowhards and business execs that destroy America. I was browsing some old pictures to download to my phone and I came across one of the funniest and most poignant images I came across during the election. Periodic Table of Criminal Elements To satisfy my scientific post of the week as well following this paragraph are a few interesting versions of the periodic table. Most Up to Date Traditional Configuration of the Periodic Table of Elements (PTOE) Traditional PTOE with Pictures of the Elements in Their Native Form. An Interesting Classic Version of the PTOE Showing Electron Orbitals and Their Wave Functions Early Spiral Version of the PTOE Another Spiral Version That Represents how the Electron Shells Form
Infinite Power Solutions - The global leader in thin-film micro-energy storage devices
Chemicum - 100+ Experiments in Chemistry II
