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.
What was shown by Rutherford's gold foil experiment?
By: Sherry Horton Blake
Gold foil can be used for a lot of things, especially if you are a creative person, and I am. However, one thing I never thought about doing with gold foil was to use it to conduct a scientific experiment. Ernest Rutherford, though, used it...
What is matter?
By: Elaine Sihera
Anything you see around you, that takes up space and has mass (volume), is matter. Examples are a table, chair, tree, plants, animals and even the air we breathe. They are all forms of matter. Matter is made of atoms that come in different types...
By: Helena Whyte
The Law of Conservation of Mass was established as a basic rule of chemistry from Antoine Lavoisier’s work on combustion. The Law of Conservation of Mass says that matter may be changed from one form to another but cannot be created or destroyed. Lavoisier...
The history of the periodic table of elements
By: Colleen Mart
From the earliest history of man, Empedocles, the Greek philosopher, was the first to theorize that everything in the cosmos consisted of four components, earth, air, fire and water. Approximately 700 years later, Aristotle espoused that there was indeed four “roots,” as he...
How fireworks get their colors
By: Elaine Sihera
We have all seen some amazing fireworks displays and marvelled at their artistry and color. People everywhere of every culture enjoy the fantastic explosions and brilliant light displays. However, these spectacles are much more than just a form of entertainment. Each firework launched into...
The components of an atom
By: Ramona Taylor
While the cell is the basic building block of living things, the atom is the basic building block of matter. Everything from the largest galaxy to the amoeba consists of a collection of atoms. While our understanding of the atom may be only centuries old...
By: Tim Canter
The question asked, how can you tell the difference between acids and bases, is written for the basic understanding of acids and bases. Describing in detail about chemical bonding, molecular structures and the forces acting upon those structures, it is best left for another...
What was shown by Rutherford's gold foil experiment?
By: Brian Dodson
The Rutherford gold-foil experiment, although actually developed and carried out in 1909 by members of Rutherford’s research team, drove what was perhaps the most important paradigm shift concerning the structure of matter known to history. Early concepts of the composition of matter focused on...
By: Alison Bowler
If you look at a chart of the periodic table, two rows of elements appear separate from the main table. These two rows comprise the lanthanide (or lanthanoid) group and the actinide (or actinoid) group. The elements in these two rows are also known as...
The components of an atom
By: Elaine Sihera
All matter—anything that has mass and takes up space—is made up of tiny particles called atoms. The term 'atom' originated from a Greek word meaning "indivisible" or unable to be divided further. For a long time scientists believed that atoms were the smallest...

 

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