Build an Atom - Atomic Structure, Atoms, Atomic Nuclei. 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. Then play a game to test your ideas! 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. Version 1.1.2. Advancing the Chemical Sciences : Databases. The Particle Adventure.
Applet: Significant Figures. Science Videos" JeLSIM. Simulating Experiments Online This project grew out of a belief in the benefits of simulation, and a realisation that there is still some way to go if they are to achieve their full potential in online learning. We view the project as a chance to take a fresh look at the criticisms of simulation raised in education literature and as an opportunity to address them.
A particular area of interest, is integration of simulations and assessment and the provision of "authentic" assessment where assessment is carried out in the environment in which learning takes place. The possibility of combining a proposal to UCLES to look at the above issues with one to suit the specific needs of the SQA within the PASS-IT project led to a focus on use of simulations in building up skills in practical activities and experimentation. A shortened version of the orginal proposal is available. Lead Prices News. Thursday, August 4, 2011 Gold prices were lower Thursday at the close of trade, droppoing $7.30 from Wednesday’s close to $1,659 per troy ounce, but not before it set a new intraday high at $1,684.90 per troy ounce and traded as low as $1,642.20 per troy ounce during the session.
The decline came as equities markets dropped, making some [...] Wednesday, August 3, 2011 Gold prices remained in record territory Wednesday as investors looked for safe places to put their cash on declines in equities markets around the world. December gold added $21.80 to $1,666.30 per troy ounce in New York for a new record high at the close after going as higha s $1,675.90 per troy ounce earlier [...] Tuesday, August 2, 2011 Wednesday, July 20, 2011 Tuesday, July 19, 2011 Prices for copper were higher Tuesday, but gold and silver lost ground after a string of gains that took gold to intraday and closing highs yesterday. Wednesday, July 6, 2011 Friday, July 1, 2011 Thursday, June 30, 2011 Wednesday, June 22, 2011. Chem-ILP. Exploration Tools. 3-D Angles Visualizing three-dimensional structures is a major hurdle for chemistry students.
Compounding the difficulty, chemists use three different concepts to imply geometry, although there is no obvious geometric information in two of them. The bond angle (a geometric construct) can be known from noting either the hybridization of the central atom (a quantum mechanical construct) or the coordination number (the number of other atoms bonded to the central atom). 3-D Angles uses pattern recognition principles introduced through rapid repeated exposure to three concepts to teach students to intuitively associate the three terms together in order to be able to correctly recognize the molecular structure from limited information.
Current version 3.0 (October 19, 2010) System requirements Windows XP, Windows Vista, or Windows 7 Setup program 3-D_Angles_Setup.exe (2.94 MB) Programmer Stephen Michael Schimpf Crystalline Solids Crystalline Solids attempts to meet that need. GraphLab Worksheets K vs.