Speed dating london chemistry

Far from prying eyes, the ground erupts; heavy equipment moving millions of tons of earth in search of something: a secret, deep underground. I'm starting with one of humanity's first elemental loves: gold; symbol Au. Join me on my Hunt for the Elements, right now, on NOVA. They tell me that so much money flows out of this place, it's like a gold mine. It's a journey that dives deep into the metals of civilization, marvels at the mysteries of the extremely reactive, reveals hidden powers and harnesses secrets of life, from hydrogen to uranium and beyond.

Even the best bell makers can't know whether their bronze will be too stiff or too soft, until they pour a bell and strike it.

This is what can happen if the amount of tin isn't right.

No one is certain why the Liberty Bell cracked, but a chemical analysis indicated there was too much tin and perhaps other impurities in the bronze.

Gold has been sought since ancient times, yet all the gold ever mined would fit into a single cube about 60 feet on a side. It was a sacred material to ancient people, and it's never lost its luster. Only a few natural elements have greater density than gold: rhenium, platinum, iridium and osmium.

Like all elements, gold is an atom that gets its identity from tiny particles: positively charged protons in the nucleus, balanced by negatively charged electrons all around, plus neutrons, which have no charge at all. It's virtually indestructible, yet also soft and malleable.

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Can we crack the code to build the world of the future? By digging, these guys are hoping to strike it rich. I'm on a quest to understand the basic building blocks of everyday matter. These symbols represent the atoms that make up every single thing in our universe: 118 unique substances arranged on an amazing chart that reveals their hidden secrets to anyone who knows how to read it.

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