Acidic Hydrogen Atoms

Explore molecule shapes by building molecules in 3D! Find out how a molecule's shape changes as you add atoms to a molecule.

Is it a tumor? Magnetic Resonance Imaging (MRI) can tell. Your head is full of tiny radio transmitters (the nuclear spins of the hydrogen nuclei of your water molecules). In an MRI unit, these little radios can be made to broadcast their positions, giving a detailed picture of the inside of your...

How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas! Sample Learning Goals * Balance a chemical equation. * Recognize that atoms are conserved in a chemical reaction. * Describe the difference between coefficients and...


Platforms: Mac

Are all atoms of a given element the same? How can you tell one isotope from another? Learn about isotopes, and about how to calculate the average atomic mass of an element. Sample Learning Goals: * Define "isotope" using mass number, atomic number, number of protons, neutrons and electrons...


Platforms: Mac

How did Rutherford figure out the structure of the atom without being able to see it? Simulate the famous experiment in which he disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core.


Platforms: Mac

Simulate the original experiment that proved that electrons can behave as waves. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability.


Platforms: Mac

Produce light by bombarding atoms with electrons. See how the characteristic spectra of different elements are produced, and configure your own element's energy states to pr


Platforms: Mac

123Tag is an easy-to-use and powerful Tag editor and file renamer for MP3,MP4,WMA and many other audio formats, useful to manage and catalog all your music files. 123Tag helps you also to find and catalog  the huge amount of music files that usually are stored and disperded on your PC,...


Platforms: Windows, Windows 7, Windows Server, Other

Chemistry teaching software which simulates the bonding of Ionic compounds on screen. Learn how Ionic compounds are formed by atoms gaining and losing electrons. Includes a reference section to support students learning with basic facts and information. Price includes full site license. Use as a...


Platforms: Windows

Chemistry teaching software which simulates the bonding of covalent compounds on screen. Learn how covalent compounds are formed by atoms sharing electrons. Includes a reference section to support students learning with basic facts and information. Price includes full site license. Use as a...


Platforms: Windows

A nice and entertaining game that has a bit of science behind it. It requires really good reaction from the player, and is fun just to watch. Help little Demon to separate color flying atoms into different rooms, as fast as possible, and this World will be saved. Take part in the online contest...


Platforms: Windows

Atomaze is a unique puzzle game, combining strategy and logic. Your goal is to place atoms so that there were no gaps between them. There are three types of atoms: blue, green and red. Blue atoms can be replaced with any other atoms. Green atoms cannot be replaced, but they can be rotated...


Platforms: Windows

The Sun is the most prominent feature in our Solar System. It is the largest object and contains approximately 98% of the total solar system mass. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths. The Sun's outer...


Platforms: Windows

This great free screen saver will soothe your eyes and mind during long workhours. Colourful atoms floating in space around your desktop, getting fused and nuked all the time. You can also download arcade game and take part in all this fun yourself - it's better than Star Wars. Small...


Platforms: Windows

Jupiter is twice as massive as all the other planets of the Solar system combined. At the same time it rotates faster than any other planet - in less than 10 hours. Its low density indicates that the planet is composed primarily of the lightest elements - hydrogen and helium. Colorful latitudinal...


Platforms: Windows

Uranus is unique in our solar system because it is tilted 98 degrees. When viewed from Earth, it appears to rotate on its side! At different times throughout its orbit, we can actually view one of the planet's poles head-on. The atmosphere is composed of hydrogen, helium, and methane. The...


Platforms: Windows

For the set of chemical elements (Ba, Sr, Ca and so on) there is a function enabling to print capital and small letters without switching by "Shift" and "Caps Lock" keys. Figures specifying the number of atoms in chemical formula (H2SO4) are automatically made subscripts, and atom's oxidation...


Platforms: Windows

Language::Basic::Expression is a Perl package to handle string, numeric, and boolean expressions. SYNOPSIS See Language::Basic for the overview of how the Language::Basic module works. This pod page is more technical. # Given an LB::Token::Group, create an expression I parse it my $exp =...


Platforms: *nix

The Elektra Project provides an alternative back-end for text configuration files. Instead of each program to have its own text configuration files, with a variety of formats, Elektra tries to provide a universal, hierarchical, fast and consistent namespace and infrastructure to access...


Platforms: *nix

Chemistry::Mol is a molecule object toolkit. SYNOPSIS use Chemistry::Mol; $mol = Chemistry::Mol->new(id => "mol_id", name => "my molecule"); $c = $mol->new_atom(symbol => "C", coords => [0,0,0]); $o = $mol->new_atom(symbol => "O", coords => [0,0,1.23]); $mol->new_bond(atoms => [$c, $o],...


Platforms: *nix