Why is the sky blue? Simplified explanation - More complete explanation describing Rayleigh scattering. Science Knowledge Quiz - "Test your knowledge of science facts and applications of scientific principles by taking our short question quiz. Then see how you did in comparison with a nationally representative group of 3, randomly selected U.
Chemistry Explained: Foundations and applications - At first glance, this site appears to be just an A-Z index to a series of short definitions of the many topics it covers, but clicking on the name of the topic itself brings up a fairly detailed but anonymously composed description or exposition of the subject. A series of handounts in Web page format describing how to approach General Chemistry problems.
The original site is long gone, but this archived advice is still worth knowing! The Alchemy Web Site - A very comprehensive source. This series appeared in Slate in mid What is chemistry good for?
A nice rejoinder to those who accuse chemistry of polluting the world. Elemental discoveries A weekly 'zine featuring chemistry topics and reviews. Chemistry crossword puzzles. Emulsions and cooking - This Science in the kitchen page discusses the role of emulsions in milk, salad dressings, butter and peanut butter. How Bread Works - You probably eat bread every day. You may even know how to make your own bread.
But have you ever thought about bread as a technology? Human Thermodynamics - this rather far-out site apparently seeks to relate chemical affinity to human interactions. The Chemistry of Wood - a 6-minute video from Glasgow University about this ubiquitous substance. Measure Converter - conversion factors between SI and cgs units of all kinds, organized both by category and name of unit. Mineral Gallery - A good minerology site with information and excellent photos of a large number of minerals organized both by name and by classification.
What is pseudoscience? All about pseudoscience, bad science, and pathological science. How to tell the difference from science. If you are interested in science, you ought to know something about the nonsense that is being flogged in the name of science. Water to wine : The molecular basis of indicator color changes. A very well-done site with interesting graphics and lots of cross-links.
Very readable and interesting, set at the "Scientific American" level and suitable for high school and introductory college courses. Boiling water without bubbles - an interesting article about the nanoparticles and the Leidenfrost effect.
John Oliver on "scientific studies" and their reporting - A Last Week Tonight YouTube video on how and why media outlets so often report untrue or incomplete information as science. General Chemistry Jeopardy games - a collection from U. Chemistry Trivia Quizzes - this site provides access to a variety of quizzes from different sources. Seiler, an Illinois high school teacher.
Chemistry Joke-a-rama - guaranteed by the American Chemical Society to make you laugh. Molecules with silly or unusual or suggestive names - an amusing and informative site by Paul May of Bristol U UK that will likely have special appeal to teen males of all ages.
Science humor WebRing - some of it is pretty corny. WV site. The story of Schroedinger's cat an epic poem. It can kill you! All about this nefarious chemical in our environment.
Sciences Jeopardy! Games - this U Pittsburgh site covers general, organic, analytical and biochemistry. Show the world that chemistry matters to you!
Here are a few U. Cotton Expressions offers some nice chemistry, biology and geology T-shirts. Science On T-Shirts has a wide selection of Chemistry-related slogans , some pretty corny.
Made-with-molecules This scientist-turned artist with a fascination for molecules offers molecule-themed silver jewelry, keychains, baby gifts, holiday cards— and, for the guys, testosterone boxer shorts. The Atomic Dashboard - is an interactive chemistry resource and learning tool developed for the Mac by Bitwixt Software Systems.
Used by educators, students, scientists, and the simply curious. With its 3D Molecule Library, and its 3D models of atomic orbitals, molecules, compounds, gases, and crystals, The Atomic Dashboard helps you explore the relationships between the behavior of atoms and molecules and their 3D structure. CurTiPot - Freeware for pH and acid-base equilibrium calculations and for simulation and analysis of Pot entiometric Ti tration Cur ves.
Intelli Balancer - this downloadable, Windows-only program will balance almost any chemical equation for you. The Atomic Mac is a shareware periodic table-oriented database including isotopic and nuclear data on the elements. Also includes a molecular weight calculator. Atom-in-a-box is a Macintosh shareware application that displays atomic orbitals in real-time. Linux4Chemistry page lists a number of Chemistry applications, including open source, freeware and shareware.
This set of lessons that provide guided, interactive instruction in General Chemistry at the college and advanced high school levels. These materials are suitable for home study or as a supplement to a formal course. All lessons start at a very elementary level, and many of them go somewhat beyond the content of the standard first-year course, making them useful to students enrolled in analytical chemistry, biochemistry, and environmental chemistry courses. Windows 3. Symyx Draw is a free Windows-only application that you can use it to draw chemical structures and export them for viewing as 3D models.
EasyChem is a free multi-platform GPL program that draws publication-quality structures. It can easily handle small and large molecules, loads multiple molecules, can move and rotate them independently, or displays a molecular dynamics trajectory.
Sources of free molecular modeling software are listed at the MathMol site -. The catch: it is pre-Windows DOS , but some of it is quite good. Trinity software offers student discounts on all its products which include a number of titles in General Chemistry. Students: you would be wise to avoid depending on these utilities for routine in beginning courses; you really need the practice in working these problems out for yourself!
MoleCalc is a free molecular weight calculator Windows-only utility by Davd Defoort. You type in the formula, and it returns themolecular weight. Free Molecular weight calculators by Matthew Monroe Windows only. Online Molecular Weight Calculator from Lenntech. Online solution calculators: mass to make up solution of given volume and molarity ; dilute a stock solution to given volume and molarity.
CurTiPot acid-base software - All-in-one freeware for pH and acid-base equilibrium calculations and for simulation and analysis of Potentiometric Titration Curves. Model ChemLab is a real-time 2-D simulation of a chemistry lab in which the user interacts with animated lab equipment in a large number of experiment modules see list.
Macintosh and Windows; Free demo available by download. It was developed with NSF support and is available to students at a very low price. Both Macintosh and Windows versions can be downloaded. The latest version incorporates many advanced features only found in expensive workstation-based modeling packages.
Novice users are able to quickly generate models, view them form any perspective, create reaction animations, and save all data to disk. Communities Find a chemistry community of interest and connect on a local and global level. Discover Chemistry Explore the interesting world of science with articles, videos and more.
It's time to renew your membership. Renew now? Yes No. Welcome to Amerian Chemical Society. You might consume me this coming Saturday. Download from Account: Login to your Teststreams account at www.
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