How fireworks get their colors
By: Sherry Horton Blake
Everyone loves to watch a firework display on the Fourth of July. However, if there were no bright colors (blues, greens, reds, etc.) it would not be nearly as fun. Instead of ooh's and aah's, you would probably hear umm and hmm. Black powder...
By: T.S. Garp
The United States Military has a policy never to disclose to the public the subject about UFO's. They would rather never mention that fact that Military personnel and surveillance equipment routinely encounter UFO's sightings. Former Astronauts and retired US Military officers feel free to come...
By: John Traveler
Atoms are the smallest bits of matter in the universe. Here on Earth, there are 92 different varieties of naturally occurring atoms which display an array of physical elemental properties. There are also some man-made atoms on Earth as well, and there is a good...
The components of an atom
By: John JS Smith
Though atoms are the building blocks of all matter, there are only three types of particles of which they are composed. The combinations of these particles determine the physical and chemical properties of atoms. The three varieties of particles are protons, neutrons, and electrons. The...
How isotopes are used
By: John JS Smith
Though every element has a specific number of protons and electrons, the number of neutrons varies within the same element. These variations are called isotopes. On the periodic table, the atomic mass of an element is closest to the element's most common isotope. There are...
By: John Traveler
At least two thousand years ago, the Chinese invented gunpowder, a mixture of charcoal, sulfur and potassium nitrate (saltpeter). Later on the Chinese used gunpowder to make rockets and by adding an explosive charge to their rockets, the incipient form of fireworks were introduced. The...
The components of an atom
By: Brian Dodson
The topic of this article is more than a bit ironic, as the term atom derives from the Greek word atamos, which means something that cannot be further divided. Nevertheless, atoms do have components, and we will take a quick trip through the substructure of...
By: Alison Bowler
Helium, the second element in the periodic table also the second lightest element and the second most common in the universe, has a number of uses. Despite being common in the universe Earth's atmosphere contains only 0.0005% of the element. Commercial supplies of the...
By: Ernest Capraro
Diffusion and osmosis are both equilibrium-related processes. Diffusion describes a general behavior of fluids (e.g. gases, liquids, solutions). Osmosis is a specific type of diffusion, occurring when mobility is restricted by a semi-permeable barrier. To make life easy, here's an easy visual model to...
By: Alison Bowler
The alkali metals form Group 1 of the periodic table. The six alkali metals are Lithium (Li) atomic number 3, Sodium (Na) atomic number 11, Potassium (K) atomic number 19, Rubidium (Rb) atomic number 37, Cesium (Cs) atomic number 55 and Francium (Fr) atomic number...

 

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