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.
Effects of mustard gas exposure
By: Norman Green
Mustard gas was used in Flanders, near the town of Ypres, on 12 July 1917. This was its first reported use in modern warfare, and one of its alternative names is Yprite. The chemical was first synthesised much earlier, certainly in 1860 by Frederick Guthrie...
What the terms systems and surroundings mean in chemistry
By: Brandon Sharp
The scientific discipline of chemistry includes a branch called thermodynamics that observes the changes that take place with different forms of energy. In this branch, the concepts of system and surroundings are used repeatedly. A system, in thermodynamics, is simply something a scientist is interested...
New superglass is stronger, tougher than steel
By: Bruce Tyson
Broken iPhones, windows, and dinnerware may soon become extinct now that a new super-glass has been created. By combining five different elements, scientists have come up with a new type of glass which is said to be stronger than steel. Formulated to bend rather than...
Chemistry projects: Creating carbon dioxide using sugar and yeast
By: michael88
Yeast or Saccharomyces Cerevisiae is a microorganism that converts the household sugar into Ethanol and Carbon-dioxide. Ethanol in the whole world is made by this method. Here’s how to perform this reaction: You will need: 1) A plastic bottle with air-tight cap. Preferably a...
Factors that influence rate of chemical reaction
By: michael88
Here are the main factors that affect the rate of reaction: Temperature: The higher the temperature, the more will particles move and the faster will be the reaction. This is because all the heat energy given to reactants turn to kinetic energy in them; the...
By: Terrence Aym
Materials scientists working on a collaborative project between the California Institute of Technology and the U.S. Department of Energy’s Lawrence Berkeley National Laboratory have managed to produce an incredible breakthrough: a new type of metallic glass.What's even more amazing is the new...
By: michael88
It is a common observation that warm water dissolves sugar more quickly than cold water. Temperature is just one of the factors that influence solubility. Nature of solute/solvent, pressure, particle size and mechanical motion, also affect the solubility of a solute. Let’s look at...
By: PK Hawk
Assaying is the analysis of ore, metal or alloy. The discipline is known as metallurgical assay. There are several uses for assaying metals, both before and after refining it. For example, samples are always taken from potential mines, to be sure of the quality of...
By: Janet Grischy
Many materials conduct electricity while others resist its flow. Silver, copper, and aluminum are famous conductors, but in fact, all metals conduct electricity and heat to a degree and most elements are metals. If a charge goes in one end of something metal, it generally...
By: Julia C
Over 4000 chemicals are found in tobacco smoke, and a minimum of 50 of these are carcinogens (as in chemicals that cause cancer). Out of these 50, 11 are a definite cause of cancer in humans, 7 probably do but it hasn't been proved yet...

 

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