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: Tarek Musslimani
A chemical reaction involves bond breaking and bond formation. In order to understand a chemical reaction, one needs to understand the meaning of a chemical bond. As an example we take the hydrogen molecule. This molecule is stable enough to exist and has one sigma...
By: Tarek Musslimani
In the modern chemistry laboratory, chemicals are identified based on their structure of atoms. Namely, if they are organic or inorganic. One basic method to identify the formula of a compound is the elemental analysis method. In this method the molecular formula of the compound...
How to color fire
By: Amy Jo Browne
Colored flames in a campfire are a neat way to bring some laughter. Make these with common household substances and a piece of duct tape. You can get a single packet of this material from Wal-Mart for about 5 bucks. I am not responsible for...
By: Ernest Capraro
Diffusion is a random (chaotic) process that leads to the uniform distribution of free-moving particles. The term is most commonly encountered in chemistry and biology, but it plays an important role in everyone's daily lives. In general, diffusion can be thought of as the process...
By: SNorris
Balloons are a very popular gift amongst people all over the world. There are many different reasons someone might give a balloon to a friend, family member or colleague. Many people give balloons to congratulate someone, say happy birthday or get well soon, and though...
By: Matias W.
Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a semi-permeable membrane. It goes on until both solutions have the same water concentration.That's sure a mouthful and does not really tells us much...
What are isotopes?
By: Megan Worley
An atom is determined by the number of protons in its nucleus and because of this all atoms of an element must have the same number of protons, they do not however have to have the same number of neutrons. Atoms that have the same...
By: Ernest Capraro
Dendrimers are a special class of polymers. (See http://www.helium.com/items/833616-what-is-a-polymer if you need a refresher on polymers.)The typical polymer is a chain where each monomer unit connects with another monomer unit in sequence. When the monomers can only form bonds to each other...
By: A Kairi
Winter is on its way and soon many a bored child will be looking for activities to occupy the many hours they will spend indoors hiding form Jack Frost. Nearly every child likes to pretend that they are a secret agent, so help your fledgling...
An overview about the chemical element Ununium
By: Alison Bowler
The element ununium or unununium or as it is now known roentgenium. Symbol: Was Uuu now Rg Atomic Number: 111 Atomic Mass: 272 amu (atomic mass units) Melting Point: Unknown Boiling Point: Unknown Number of Protons: 111 Number of Electrons: 111 Number of Neutrons: 161...

 

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