presentation asst.prof.dr.purit thanakijkasem. silver silver is a metallic chemical element with...
TRANSCRIPT
SILVER
Presentation
Asst.Prof.Dr.Purit Thanakijkasem
Silver
Silver is a metallic chemical element with the chemical symbol Ag
it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal
Occurrence the Silver Element Silver ore is found in native form. The other principal sources of
silver are copper, copper-nickel, gold, lead and lead-zinc ores.
Found in Canada, Mexico, Peru, Australia and the USA.
Basic Information
Name: Silver Symbol: Ag Atomic Number: 47 Atomic Mass: 107.8682 amu Melting Point: 961.93 °C Boiling Point: 2212.0 °C Number of Protons/Electrons: 47 Number of Neutrons: 61 Classification: Transition metalCrystal Structure: Cubic Density @ 293 K: 10.5 g/cm3 Color: silver
Atomic Structure
Number of Energy Levels: 5
First Energy Level: 2 Second Energy Level:
8 Third Energy Level: 18 Fourth Energy Level:
18 Fifth Energy Level: 1
Atomic Structure
Physical properties Silver is soft white metal with a shiny surface It is the most ductile and most malleable
metal It conducts heat and electricity better
than any other element It also reflects light very well.
Chemical properties
Silver is a very inactive metal. It does not react with oxygen in
the air It does react slowly with sulfur
compounds in the air
The uses of Silver
Silver was one of the earliest metals used to make coins
The uses of Silver
Because silver is such a good conductor of electricity, it is used in many electrical applications such as switches, contacts and fuses
The uses of Silver
About 14 percent of silver in the world is used in jewelry and silverware
Silver's important role in film
Photographic film is coated with a thin layer of silver chloride, silver bromide, or silver iodide
44% of Silver world’s usage use in photo graphics film and paper
Present by
Hataikan Plylahan 5310755342 Kanthicha Tawoncheewin
5310755656
References
http://en.wikipedia.org/wiki/Silver#References
www.google.com http://www.australianminesatlas.go
v.au/education/down_under/silver/used.html
www.chemistryexplained.com