silver

silver
An Internet Hotlist on silver

created by lisacheng10
SBS

Introduction | characteristic , informations | uses | others

Introduction

http://www.limestone.on.ca/ibuild/davies/chinesept.html

*Atomic number: 47
*Atomic mass: 107.8682 amu
*Number of Protons/ Electric: 47
*Number of Neutrons: 61
*Physical characteristics:
1. Transition metal
2. Group 11, period 5 of the Period Table
3. Highest electrical/ thermal conductivity of any metal
4. used in coins, tableware, jewelry, photograph
5. standard state: solid ( 298 K)
6. color: silver
7. Density: 10.49
8. Liquid density: 9.320
9. melting point: 1234.93K
10. boiling point: 2435K
*Chemical properties: Electronic, thermal, and satiric data along with an isotope table
*Toxity: Liquid or vapor may be irritating to skin, eyes, throat, or lungs. Intentional misuse by deliberately concentrating and inhaling the contents of this product can be harmful or fatal. It may also cause stomach discomfort, nausea, vomiting, diarrhea, and narcosis. (kidney damage, eye damage, lung damage, liver damage, Anemia, Brain damage) It might kill you if you swallowed it.
*Uses: Batteries, bearing, brazing and soldering, catalysts, coins, electrical, electronics, electroplating, jewelry and silverware, medical applications. Most importantly, “44%of all the silver used us in the photographic film and papers. Jewellery and silverware now account for about 14% of the world’s silver usage.”
*Manufacturing and or production: it can be use in clothing, foods and all the things above (uses of silver).
*History/ discovery etc.: The element silver had been discovered thousand years ago. People use it as jewelry, religious artifacts and food ressels formed from the durable, malleable metal. In 1792, the US monetary system make silver into dollars; it was used until 1965.
*Interesting aspects of the elements: found that silver were used in a long period of time. Plus, it is very useful in our daily life today.

The Internet Resources

characteristic , informations

ChemGlobe-Silver - This website gives the information of Physical data. (Electronic data, thermal data, steric data) Therefore; there are lots of specific Isotopes terms. Such as, different Nuclide, Abundance %, Mass, Spin, Halflife, Decay mode and Decay tree) and other information; for examples, Name origin: Anglo-Saxon: siolful, (silver); Symbol from Latin: argentium. Description: silvery-aucitle and malleable metal…(7/10)
Chemistry: Periodic table: silver key information - In this website, there are basic information of the essentials and the description of silver. And also, movies of silver; the movie shows the reaction of the mixture of magnesium metal with solid silver nitrate with water. Practically, there is a comic about the element silver. Last, the webpage made a summary of the isolation of silver. (10/10)
Jefferson lab- its element- silver - This webpage discussed about the history and the uses of silver. Such as people had been using silver for at least 5000 years. Also, silver is known as the best conductor of hear and electricity of all known metals. However, webpage gives specific information like Estimated Crystal Abundances, Number of stable Isotopes and all kinds of physical characteristics information of the element silver. (6/10)
Lenntech: silver-Ag - This website gives a lot of basic information for Silver, such as Atomic number, atomic mass; electro negativity and density…Therefore the website include Applications, health effect of silver… For example the liquid of silver will irritate to the skin, eyes, throat and lungs. Basically this website introduce about the in formations such as Environmental levels, effects of organisms in the laboratory and field, Aquatic environment, Terrestrial environment and effects evaluation. (7.5/10)
Native Silver - This website base on introducing the physical characteristics. Such as the color of the silver is silvery white with exposed sepciments tarnishing black. The Luster is metallic the transparency of silver is opaque. Plus, the crystal system of silver, the crystal Habits, Clearage, Fracture, streak, Hardness…..Lots of specific information of silver. (6/10)
Periodic table of the elements- silver - This website gives good summary in every section of silver. In history, people discovered that lead and silver are different in the early 3000 B.C. It is a very big discovered for the scientist today. The website also gives clear sources, productions, properties, uses, handling and cost of the element silver. (9.8/10)
ScienceLab.com- silver - This website base on the characteristic of the element silver. In this website, there is a clear and obvious chart information of silver. Such as, name, symbol, atomic weight, atomic number, CAS ID… And all kinds of specific information about the element silver. (5/10)
Silver - This webpage included a picture of silver that is used in silverware. Therefore, there are physical properties under. It also included the description of silver. It described the history, the uses and how it can be mix by other compounds. (7.5/10)
Silver Historical background - This website described silver’s historical background. It included; when people found the element silver, how they are used. Therefore, when did American started to use silver dollars? And why did people end up not using silver dollars. Last, it introduced; how silver is use in our daily life now. (10/10)
Wikipedia-silver - This website talks about the history of silver, and also tells us about the use in medicals. Plus, the health precautions, use in food and clothing. For examples, silver mix with yarns makes the clothing more harmful and active in humid weather. Therefore, it also included the price of silver, folklores and popular cultures in the webpage. However, at the beginning of the website also introduce the basically general, physical properties, atomic properties, Miscellaneous and the selected isotopes.(10/10)

uses

The indispensable metal- uses - The uses of silver, for example, batteries, bearings, Brazing and soldering, catalysts, coins, electrical, electronics, electroplating, jewelry and silverware, medical applications…..Those are the basic uses of silver; this website describes how each items are made and use in the products. For example, the batteries are including 35% of silver by weight. Plus, “the silver battery provides the higher voltages and long life required for quartz watches.” (6.5/10)
The uses of silver - This website lists information about silver. Silver had been used as a product for a long time. The color of the silver is the brightest white in all the elements. However, silver is a very common seen element that include in daily uses. For examples, the forks, the jewelries and tableware are the items that involved with the element silver. Most importantly, “44%of all the silver used us in the photographic film and papers. Jewellery and silverware now account for about 14% of the world’s silver usage.”(8/10)

others

Element Silver facts - This website gives lots of facts about silver, such as “Silver is used to represent the twenty-fifth wedding anniversary.”, “the name silver came from the old English word seolfor.”, “and there is 1740000metric tons of silver discovered in the world up to the year 2007.”…(7.5/10)
Sam’s silver scrapbook - This website introduce about the element- silver. It also introduces the physical characteristics of silver, chemistry properties of silver, background of silver and where silver is found. It also gives a guide line to help people reach on this element. Plus, there lots of examples, such as the physical characteristics of silver include the native silver and a bit of the history of silver. (8/10)

Content by lisacheng10, lcheng@sbschool.org
http://www.kn.att.com/wired/fil/pages/listsilverli.html
Last revised Mon Dec 17 6:28:05 US/Pacific 2007