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.
How to make alkaline water
By: Connie Goranson
Lemon water's health benefits: Fresh lemons make water alkaline. Just buy a fresh lemon, and wash it first. A teaspoon of baking soda in eight ounces of water will rid the rind of any chemicals. Use a vegetable brush in a bowl of water and...
By: Tarek Musslimani
The acid and base concepts are so prevalent that it occurs in all branches of chemistry including organic, inorganic and analytical chemistries. It also occurs in physical and green chemistries. From this we see the importance of this concept so that it would be reasonable...
Facts about dry ice
By: Chris Pine
Dry Ice is a unique substance which has many uses. Essentially, dry ice is frozen carbon dioxide (CO2). The first report of what we now call dry ice came from the French chemist Charles Thilorier, in 1834. In 1924, the DryIce Corporation of America trademarked...
By: Ian Farquharson
Gold has been one of the most sought after metals in the history of mankind and its beauty has been prized since it was first discovered in ancient times. It is one of the most common precious metals in jewelry making and for a longtime...
By: Ernest Capraro
Hydrocarbons are molecules made of only the two elements: carbon and hydrogen. One might think that with only two building blocks, hydrocarbon chemistry would be quite limited. The reality is that hydrocarbon chemistry is extensive, and plays a significant part in daily life. Hydrocarbons are...
Guide to solar (photovoltaic) cells
By: Marvin Somers
Photovoltaic cells convert sunlight into energy and are used in applications such as solar panels to generate electricity. They work using a semiconducting metal (silicon) that reacts to incoming particles of light energy, known as photons. To understand this process first requires an understanding of...
How to empirically demonstrate chemical equilibrium
By: Mishra Planeswalker
Chemical Equilibrium is defined as a state of reaction where the rate of change in the reactants and the products remains constant. Note that the amounts of the different entities need not be constant, only their respective rates of change. Because many chemical equilibria take...
Defining characteristics of metals
By: D. Vogt
There are two basic definitions of metal, the astronomical one and the chemical one. Astronomically, "metals" can refer to all elements heavier than hydrogen and helium. In chemistry, metal is used much more specifically. Metals are elements which form ionic bonds by releasing electrons and...
By: Alison Bowler
The Swedish chemist Johan Gottlieb Gahn discovered the element manganese (symbol Mn, atomic number 25), a gray-white, hard, brittle metallic element, in 1774. Its relationship with man and most other life on Earth has a long history, as it is an essential element. A deficiency...
The difference between enthalphy and entropy
By: Alexius Tan
Enthalpy and entropy are terms commonly encountered in the field of thermodynamics. In a very simplified model of explanation, both the terms enthalpy and entropy are measure of energy. Before I continue with explaining each of them, I feel it is necessary for me to...

 

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