- published: 31 Aug 2009
- views: 157866
In chemistry, the term base metal is used informally to refer to a metal that oxidizes or corrodes relatively easily, and reacts variably with diluted hydrochloric acid (HCl) to form hydrogen. Examples include iron, nickel, lead and zinc. Copper is considered a base metal as it oxidizes relatively easily, although it does not react with HCl.
Base is used in the sense of low-born, in opposition to noble or precious metal. In alchemy, a base metal was a common and inexpensive metal, as opposed to precious metals, mainly gold and silver. A long-time goal of the alchemists was the transmutation of base metal into precious metal.
In numismatics, coins used to derive their value primarily from the precious metal content. Most modern currencies are fiat currency, allowing the coins to be made of base metal.[citation needed]
In mining and economics, base metals refers to industrial non-ferrous metals excluding precious metals. These include copper, lead, nickel and zinc. The U.S. Customs and Border Protection is more inclusive in its definition. It includes, in addition to the four above, iron and steel, aluminium, tin, tungsten, molybdenum, tantalum, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium, rhenium and thallium.
Base Metal 1
Base De Metal Para Improvisar En Guitarra: Heavy Metal en Mi Menor TCDG
Base de Batería - Metal
Dnb & Metal Short Mix Drum Base Metal \m/
INSANE CUSTOMIZATION!!! Build Your Own Base! - Metal Gear Solid 5 Gamescom 2015 Mother Base Gameplay
Metal Gear Solid 5 - A Beginner's Guide to Mother Base
Hidden Cutscene at Mother Base - Metal Gear Solid V: The Phantom Pain **SPOILERS**
Download - Base Metal . HQ
MGSV: The Phantom Pain Gameplay - 8 Things You Should Do In Mother Base
METAL BASE RAID - Ark Survival Evolved
[Official] gamescom 2015 GAME PLAY DEMO | METAL GEAR SOLID V: THE PHANTOM PAIN (US) ESRB [KONAMI]
Metal Gear Solid 5: Mother Base Tips & Tricks
ARK: Survival Evolved - METAL BASE MONTAGE! S2E95 ( Gameplay )
Denis Smalley - Base Metals (2000)