Platinum is a pure elemental metal, which, like other elements, doesn't break down into further components. It is element number 78 on the periodic table and has an atomic mass of 195.08. Platinum is relatively unreactive and is found naturally mixed with small amounts of other metals in its family group.Know More
While the discovery of platinum is traceable to the 1730s or 1740s, no one is sure who made the discovery, according to About.com. Pre-Cambrian Indian artifacts show its use in a relatively pure form. Reference.com says the Spanish make reference to the metal in mining for silver in Central America in the 1550s, but they considered it an impurity, so it was discarded.
While halogens, sulfur and caustic alkalis attack platinum, it doesn't react with oxygen even when heated to a high temperature. It does absorb large quantities of hydrogen, which it releases as red heat.
Platinum is a silver-white metal that resists wear and tarnish, making it a good choice for use in making fine jewelry. In the medical field, it is used in laboratory utensils and surgical tools as well as surgical implants, such as replacement valves and pacemakers. Dentists use platinum extensively. The electronics industry uses it to make contact points and electrical resistance wires.Learn More
White gold is an alloy of gold and other metals, such as silver or palladium, while platinum is an almost entirely pure white metal. In a natural state, platinum has a much whiter color than white gold. However, most white gold is plated with rhodium, which makes the colors much more similar.Full Answer >
Platinum has 117 neutrons. It is element number 78, which means that it also has 78 protons and 78 electrons. Platinum's atomic weight is 195 grams per mole.Full Answer >
According to About.com, cellophane is made from cellulose fibers, which usually come from wood or cotton. The cellulose fibers are sent through a narrow slit into an acid bath. As the acid regenerates the cellulose fibers, a thin film forms. The film is then washed, bleached and processed to yield cellophane.Full Answer >
Kevlar is made of paraphenylenediamine and terephthaloyl chloride. This combination creates aramaid threads that are dissolved and then spun into regular fibers, which are woven into fabrics.Full Answer >