An tumbaga amo an elemento kimikal nga may ihap atomika nga 29. An tigaman hini amo an agi nga Cu.

An Copper, silver, ngan bulawan amo in membro san group 11 san periodic table; may'ada ini na mga metal usa na s-orbital electron ngan puno na d-electron shell na may kinaiya na may'ada hitaas na ductility, ngan electrical (59.6×106 S/m) ngan thermal conductivity, ika-2 na pinakahitaas (nasunod sa silver) sa mga puro na metal sa room temperature.^[1]

Daramo an alloy san tumbaga o copper, ngan daramo liwat an pinaggagamitan. Brass an alloy san copper ngan zinc. Bronse naman an 10% copper ngan tin o lata. An alloy san copper ngan aluminum gintatawag na aluminium bronze. Sayo an importante na sangkap an copper sa alahas kaupod an silver ngan bulawan. An carat solder na may'ada copper ginagamit sa pagtagaalahas pagliwat san kulay, katig'a ngan melting point san alloy.^[2]

An alloy san copper ngan nickel gintatawag na cupronickel,ngan ginagamit sa paghimo sinsilyo.

Usa ka turók ini nga barasahon. Dako it imo maibubulig ha Wikipedia pinaagi han pagparabong hini.

An Wikimedia Commons mayda media nga nahahanungod han: Copper

• Massaro, Edward J., ed. (2002). Handbook of Copper Pharmacology and Toxicology. Humana Press. ISBN 0-89603-943-9. 
• "Copper: Technology & Competitiveness (Summary) Chapter 6: Copper Production Technology" (PDF). Office of Technology Assessment. 2005.
• Current Medicinal Chemistry, Volume 12, Number 10, May 2005, pp. 1161–1208(48) Metals, Toxicity and Oxidative Stress
• William D. Callister (2003). Materials Science and Engineering: an Introduction, 6th Ed.. Table 6.1, p. 137: Wiley, New York. ISBN 0-471-73696-1. https://archive.org/details/materialsscience00call_0. 
• Material: Copper (Cu), bulk, MEMS and Nanotechnology Clearinghouse.
• Kim BE, Nevitt T, Thiele DJ; Nevitt; Thiele (2008). "Mechanisms for copper acquisition, distribution and regulation". Nat. Chem. Biol. 4 (3): 176–85. doi:10.1038/nchembio.72. PMID 18277979.CS1 maint: multiple names: authors list (link)
• Copper transport disorders: an Instant insight from the Royal Society of Chemistry

Iton Wikiquote mayda tinirok nga mga puplonganon, darahonon o ginyakan nga nahanunungod han/kan:

Tumbaga

An Wikimedia Commons mayda media nga nahahanungod han: Tumbaga

Kitaa an copper ha
Wiktionary, an gawasnon nga pagpurulongan o diksyunaryu.

An Wikisource mayda orihinal nga sinurat nga nahahanungod hiní nga barasahon: Tumbaga

• Copper at The Periodic Table of Videos (University of Nottingham)
• National Pollutant Inventory – Copper and compounds fact sheet
• Copper Resource Page. Includes several PDF files detailing the material properties of various kinds of copper, as well as various guides and tools for the copper industry.
• CDC – NIOSH Pocket Guide to Chemical Hazards – Copper (dusts and mists)
• CDC – NIOSH Pocket Guide to Chemical Hazards – Copper fume
• The Copper Development Association has an extensive site of properties and uses of copper; it also maintains a [https://web.archive.org/web/20210210210444/http://www.brass.org/ Ginhipos 2021-02-10 han Wayback Machine web site dedicated to brass, a copper alloy.
• The Third Millennium Online page on Copper
• Price history of copper, according to the IMF