Periodic table samples as far as the eye can see! Theo Gray’s collection of images will pull you in. International Year of Chemistry Periodic Table Project It’s a mural! It’s element tiles created by chemistry students and enthusiasts. Find your favorite. International Year of the Periodic Table Timeline. The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends. Short videos about every element on the periodic table, plus other cool experiments and chemistry stuff. Extra videos- Our YouTube Channel- Sixty Symbols (physics)- Numberphile (maths)- Facebook- Twitter- Email. Diamonds: Exploding Wires. Chemistry: Introduction to the Periodic TableThe periodic table is the most powerful tool chemists have for organizing chemical information. Without it, chem. The periodic table is a chart containing information about the atoms that make up all matter. An element is a substance made up of only one type of atom. The atomic number of an atom is equal to the number of protons in its nucleus.
from Wikipedia, the free encyclopedia
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The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev.
Mendeleev intended the table to illustrate recurring ('periodic') trends in the properties of the elements.
The layout of the table has been refined and extended over time, as many new elements have been discovered since Mendeleev's time, and new theoretical models have been developed to explain chemical behavior.
Various layouts are possible to emphasize different aspects of behavior; the most common forms, however, are still quite similar to Mendeleev's original design.
The main value of the periodic table is the ability to predict the chemical properties of an element based on its location on the table.
It should be noted that the properties vary differently when moving vertically along the columns of the table, than when moving horizontally along the rows.
The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior.
The table has also found wide application in physics, biology, engineering, and industry.
Note: The above text is excerpted from the Wikipedia article 'Periodic table', which has been released under the GNU Free Documentation License.
For more information, see the following related content on ScienceDaily:
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