For Your Chemists: Interactive Periodic Table

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Link: Elements [interactive Periodic Table]

 

In calculator mode: Click on atoms that make up an element or compound and it will recognise it, name the element or compound and calculate proportions [Mass percentages] of the atoms in the requested item:

 

Water:

 

http://i.snag.gy/qAgAA.jpg

 

Ammonium Hydroxide:

 

http://i.snag.gy/W10A5.jpg

 

Potassium Permanganate:

 

http://i.snag.gy/ta5jn.jpg

Clever stuff!

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Another interactive Periodic Table:

 

Link: TED-Ed and Periodic Videos

 

http://i.snag.gy/kpUhA.jpg

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Link: Periodic Table of the Elements

 

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Link: APOD: 2017 October 24 - Where Your Elements Came From

 

 

Explanation: The hydrogen in your body, present in every molecule of water, came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen. Much of the iron in your body was made during supernovas of stars that occurred long ago and far away. The gold in your jewelry was likely made from neutron stars during collisions that may have been visible as short-duration gamma-ray bursts or gravitational wave events. Elements like phosphorus and copper are present in our bodies in only small amounts but are essential to the functioning of all known life. The featured periodic table is color coded to indicate humanity's best guess as to the nuclear origin of all known elements. The sites of nuclear creation of some elements, such as copper, are not really well known and are continuing topics of observational and computational research.