CHEMISTRY: WEEK 3
My element of the week is gold which is symbolized by Au on the periodic table. It is one of the least reactive chemical elements and is solid under standard circumstances. One of the celestial origin theories is that gold was produced in supernova nucleosynthesis and formed by the collision of neutron stars. The high value of gold has been attributed to its association with perfection. It symbolizes humankind's quest to perfect, illuminate and refine itself. It's resistance to heat and acid has also made it a representation of immutability and perfection.
Green chemistry is the design of chemical products and processes that reduce or eliminate the generation of hazardous substances. The adoption of this practice has led to significant environmental improvements, innovation and a strengthened economy. I am most impressed by the benefits of green chemistry. Cleaner air, cleaner water, increased safety for workers in the chemical industry, safer consumer products and safer food are all results of increased green chemistry practices. Green chemistry challenges us to rethink some of the destructive and toxic methods we have been implementing to create a safer environment for generations to come.
I found this information about use of Gold which would like to share with you:
ReplyDeleteart, for decoration and as architectural ornament. Electroplating can be used to cover another metal with a very thin layer of gold. This is used in gears for watches, artificial limb joints, cheap jewellery and electrical connectors. It is ideal for protecting electrical copper components because it conducts electricity well and does not corrode (which would break the contact). Thin gold wires are used inside computer chips to produce circuits.