Chemistry

Every moment of every day, chemistry plays a part in all we experience. This branch of the Helium network humbly attempts to illuminate the vast array of chemical knowledge, making it accessible to all. Let our site inform, inspire, and awe you with chemical wonders.
By: Ernest Capraro
Iron, one of the transition metals, is a common and well known element. Most readers will be familiar with it as a dull gray metal, great for making nails, horseshoes, and skillets. It is one of the stronger metals, and has a higher melting temperature...
The elementary particles
By: Andrew J. Bennieston
The Standard Model (SM) of particle physics describes the elementary particles which make up the universe, as well as the interactions between them. Aspects of the standard model have been tested to incredible precision - for example, quantum electrodynamics (QED) is the most precisely tested...
An overview about the chemical element Erbium
By: Xauri'El Zwaan
The element Erbium is a 'rare earth metal' or lanthanoid; in its pure state, it is a soft and malleable silver-white metal. Its atomic number is 68; its atomic symbol is Er. It is a natural solid, having a melting point of 1529 degrees centigrade...
By: Bethany Brewer
Heat packs have a number of uses, from warming campers' hands to providing relief from muscle aches and injuries. Some heat packs are single use only, but in reusable heat packs, a simple chemical reaction allows it to be used almost indefinitely. Reusable heat packs...
By: Michelle Tuesday
The classroom lights dim. A spotlight shines on a lone guitar player, his hair an explosion of brown frizz, his face covered in stubble. He cranks up the amplifier, distortion filling the classroom with a static buzz. He pushes his glasses up his nose, flips...
How Ernest Rutherford pioneered the orbital theory of atoms
By: Adam Feneley
Rutherford Scattering is common place in physics classrooms of schools and colleges all over the world, his very simple experiment shaped our whole views on science, he effectively discovered the nucleus, without this ground work the majority of modern day physics and chemistry would not...
By: Michelle Tuesday
As most people know from experience, oil and water do not mix. As a result, oils cannot be removed from soiled dishes, laundry, or other household items by water alone. Soap must be added to the water to dissolve the oils. In order to understand...
Understanding net ionic equations in chemistry
By: Michelle Tuesday
Understanding net ionic equations in chemistry requires first understanding ionic exchange reactions, and in particular, precipitation reactions. Ionic exchange reactions, including precipitation reactions, take place in water, referred to in chemistry as "aqueous solution." When an ionic compound is dissolved in water, it ionizes...
By: Alison Bowler
The f block elements are formed of two series the Lanthanoids (or Lanthanide series) and the Actinoids (or Actinide series). They are also sometimes called rare earth elements, although many are more abundant than the platinum group of elements. Most elements are grouped vertically in...
By: Alison Bowler
Nickel Symbol: Ni Atomic Number: 28 Atomic Mass: 58.6934 amu (atomic mass units) Melting Point: 1453.0 C (1726.15 K, 2647.4 F) Boiling Point: 2732.0 C (3005.15 K, 4949.6 F) Number of Protons: 28 Number of Electrons: 28 Number...

 

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