Chemical Equation Balancer - F. Boy discovers microbe that eats plastic. It's not your average science fair when the 16-year-old winner manages to solve a global waste crisis. But such was the case at last May's Canada-Wide Science Fair in Ottawa, Ontario, where Daniel Burd, a high school student at Waterloo Collegiate Institute, presented his research on microorganisms that can rapidly biodegrade plastic. Daniel had a thought it seems even the most esteemed PhDs hadn't considered. Plastic, one of the most indestructible of manufactured materials, does in fact eventually decompose. It takes 1,000 years but decompose it does, which means there must be microorganisms out there to do the decomposing. Editor's note: There are two high school students who have discovered plastic-consuming microorganisms. Could those microorganisms be bred to do the job faster? The preliminary results were encouraging, so he kept at it, selecting out the most effective strains and interbreeding them.
Twelve Free Chemistry Databases. Just two years ago, trying to find free online chemistry databases was an exercise in futility. Now, they're sprouting up all over the Web like wildflowers after a wet Spring. What follows is a far-from-complete roundup of some of the more interesting places to start your chemical search. PubChem- The granddaddy of all free chemistry databases.
Search over 8 million compounds by a variety of criteria. Why is there salt in the ocean? | 200 Questions About Chemistry. Because it dissolves easily in water. Water in the oceans evaporates into the air, leaving solids like salt behind. The water vapor then rises and cools until it falls as rain. If the nearly pure water in the rain falls on land, it dissolves some of the dirt it falls on.
Rain that has dissolved carbon dioxide in it is slightly acidic, and the acid helps to dissolve the dirt. Dirt is mostly silica, so about 15% of the dissolved solids in river water turns out to be dissolved silica (silicon dioxide, what glass and quartz is made of). Many things dissolve more easily than silica. So the solids in river water are mostly bicarbonate ions (from the carbon dioxide in the air), calcium, silica, sulfate, chloride, sodium, and magnesium, in that order.
But when the river water gets to the sea, the organisms in the ocean start to remove ions from the water to build their shells. Timeline html. We would like to invite you to suggest other items for inclusion in the chemsoc timeline. All genuine suggestions will be considered and those accepted will be credited to the individual responsible! The events do not have to be chemistry related - just notable discoveries or incidences that are of interest to scientists and the general public. Please Email timeline@chemsoc.org with your suggestion, where possible please include the date the event/discovery took place and some basic details: where it took place, who was involved and maybe some other sources of information. You can even make predictions for inventions or discoveries that you think will be made in years to come. For example if you think teleportation will be possible in 2020, why not suggest it to us! Chemsoc's timeline artist Murray Robertson will create an an appropriate image to represent each successful entry. back to top.
Lectures/Videos. Books. Stoichiometry and Balancing Reactions - ChemWiki. Stoichiometry is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data. In Greek, stoikhein means element and metron means measure, so stoichiometry literally translated means the measure of elements. In order to use stoichiometry to run calculations about chemical reactions, it is important to first understand the relationships that exist between products and reactants and why they exist, which require understanding how to balanced reactions. Balancing In chemistry, chemical reactions are frequently written as an equation, using chemical symbols. The reactants are displayed on the left side of the equation and the products are shown on the right, with the separation of either a single or double arrow that signifies the direction of the reaction.
Reactants to Products A chemical equation is like a recipe for a reaction so it displays all the ingredients or terms of a chemical reaction. A. Electronic Journals - Chemistry & Chemical Engineering Library - University of California, Berkeley. Bizarre Stuff Catalogue. Reaction Finder for the Organic ChemIST. Thirty-Two Free Chemistry Databases. Chemical information is in the early stages of a revolution. Long dominated by a handful of established players, the field has rather suddenly opened up to a variety of innovative newcomers.
The Internet now offers a diverse array of free online chemistry databases, twelve of which were summarized in a recent article. This list has since been updated with new information and new entries. The following (incomplete) list summarizes some of the possibilities available for your next search. PubChem- The granddaddy of all free chemistry databases. Spectral Database for Organic Compounds (SDBS)- Search by name, molecular formula, molecular weight range, or CAS Number through over 14,000 full 1H NMR spectra, 12,000 full 13C spectra, and 50,000 full FT-IR spectra collected from over 32,000 compounds.BindingDB- Structure search over 24,000 Ki and IC50 measurements from over 10,000 molecules. Physical & Chemical Properties - Chemistry & Chemical Engineering Library - University of California, Berkeley.
InnerHi. The Elements by Theodore Gray. My book The Elements is based on photographs I've been collecting at my website periodictable.com for many years. The website includes not just pictures, but also more detailed descriptions than we could fit in the book, and most importantly, it includes full 360-degree rotating videos of almost all the objects.
You really won't find this kind of resources anywhere else for any other subject, so please enjoy. If you don't have the book yet, please don't think this is page is a substitute for the real thing. Aside from the fact that people buying the book (and my other photo periodic table products) is what pays for me being able to continue hosting the website, there's really no substitute for a paper book in your hands.
The book also makes a fabulous gift, and you can't give a website as a gift! For the convenience of people who have the book, I've listed all the samples found on each page in the book, so you can easy look them up. Chemeddl.org - Give Your Chemistry Class a Boost. Unlike other subjects like biology or calculus, the "answers" to Chemistry questions aren't always so cut and dry. Understanding Chemistry involves understanding the makeup of molecules, the reactions produced when compounds are combined, and an appreciation of many other elements of the molecular world. It is a subject that his mathematical, graphical and at times very complex.
Teachers and professors need as many tools at their disposal to present the material to students. One of the best resources for educators that teach Chemistry is a professionally made website called ChemEd DL, which stands for Chemical Education Digital Library. The website features online web apps, courses, interactive graphics and many other resources for teaching students the vast majority of core Chemistry principles. Main ChemEd DL Screen Periodic Table Live! One of the most valuable web apps on the site, particularly for students that are first learning the periodic table, is "Periodic Table Live!
" Models 360.