Build an Atom - Phet Topics Atoms Atomic Structure Isotope Symbols Atomic Nuclei Description Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Sample Learning Goals Use the number of protons, neutrons, and electrons to draw a model of the atom, identify the element, and determine the mass and charge.Predict how addition or subtraction of a proton, neutron, or electron will change the element, the charge, and the mass.Use the element name, mass, and charge to determine the number of protons, neutrons, and electrons.Define proton, neutron, electron, atom, and ion.Generate an isotopic symbol for an atom, given the number of protons, neutrons, and electrons. ChemDraw on the App Store Physics I: Classical Mechanics | Physics Chemists Confirm the Existence of New Type of Bond Chemistry has many laws, one of which is that the rate of a reaction speeds up as temperature rises. So, in 1989, when chemists experimenting at a nuclear accelerator in Vancouver observed that a reaction between bromine and muonium—a hydrogen isotope—slowed down when they increased the temperature, they were flummoxed. Donald Fleming, a University of British Columbia chemist involved with the experiment, thought that perhaps as bromine and muonium co-mingled, they formed an intermediate structure held together by a “vibrational” bond—a bond that other chemists had posed as a theoretical possibility earlier that decade. In this scenario, the lightweight muonium atom would move rapidly between two heavy bromine atoms, “like a Ping Pong ball bouncing between two bowling balls,” Fleming says. At the time of the experiment, the necessary equipment was not available to examine the milliseconds-long reaction closely enough to determine whether such vibrational bonding existed.
Practical Physics This website is for teachers of physics in schools and colleges. It is a collection of experiments that demonstrate a wide range of physical concepts and processes. Some of the experiments can be used as starting-points for investigations or for enhancement activities. Physics is a practical science. Good quality, appropriate physics experiments and investigations are the key to enhanced learning, and clarification and consolidation of theory. We have published a new set of resources to support the teaching of practical science for Key Stages 3-5. It’s not easy being green As a culinary scientist, I’m constantly straddling the border between two worlds. My career is predicated on marrying two disparate skill sets and ideologies – those of the chef and those of the biochemist – to reinforce the strengths and cover the weaknesses of each side. There are gaps in this hybrid armour, however – situations where science, technology and culinary creativity have yet to catch up with our ambition. At times, these puzzles can appear maddeningly simple. For instance, we have yet to discover an effective method for manufacturing a good bottled beverage containing naturally green ingredients. Water hazards Chemically, the preservation of green is all about coddling chlorophyll molecules. This effect is enhanced in acidic environments, which cooks have long combated by using neutral or alkaline water for blanching green vegetables, thus minimising the number of hydrogen ions vying for a place at the centre of the chlorin ring. Turning up the heat Ingredients - 200g avocado
High School Physics and AP Physics Online MolView The Model menu contains some general functions for the 3D model. Reset This function sets the model position, zoom and rotation back to default. Representation You can choose from a list of different molecule representations including; ball and stick, stick, van der Waals spheres, wireframe and lines. Macromolecules are automatically drawn using ribbons. Background You can switch between a black, gray or white background. Engines You can choose from three different render engines: GLmol, Jmol and ChemDoodle. MolView automatically switches to: Jmol if you execute functions from the Jmol menu GLmol if you load macromolecules (due to significant higher performance) ChemDoodle if you load a crystal structure (GLmol cannot render crystal structures) You might want to switch back to GLmol when you do no longer need Jmol or ChemDoodle since GLmol has a better performance. Note that macromolecules are drawn slightly different in each engine. Model transformation Crystallography Fog and clipping
Best Websites The Internet has spearheaded information explosion. Today all kinds of information lies at your fingertips! However, the Internet is also full of all kinds of websites, with unreliable information. So, how do we know which websites to believe? To solve your dilemma, we've compiled a set of articles with information about some of the most-visited and most-useful websites available online. Take a look! 8 Popular Sites Like Reddit Reddit has been known to keep its viewers up-to-date on all the latest trends. 10 Popular Dragon Age Fanfiction Websites Dragon Age is one of the most popular games in the fantasy genre. 10 Wallpaper Sites Like InterfaceLIFT Long before smileys and emoticons, wallpapers ruled the roost. 10 Sites Like Bored Panda to Keep You Amazed Bless the world of Internet, where they have a remedy for each and everything - from boyfriend problems to your cooking dilemma. Top 10 Photo Sharing Sites Like Pinterest 8 Alternatives to iStockphoto 13 Most Popular Fanfiction Websites
Top Site List Planet - Top 10 Lists of top websites and apps