Tin
Tin's discoverer is unknown but one thing is known. Tin has been used and discovered by the ancients. Tin was an accidental discovery. Tin has been around for many years. Proof is in the fact that tin is mentioned in the old testament of the bible. Tin had a great effect on the world because of its low price, high electric conductivity, and because tin protects against rust and weak acids in food if the can is made out of tin instead of aluminum. Some common compounds of tin are organtin a combination of carbon and tin. When tin is formed with carbon to make organtin it can make more than 500 organtin compounds. These compounds are used in everyday things. One is toothpaste containers and also are things such as wood, paper, textile, farm sprays, and Hospital disinfectants. To get pure tin you must first find ore cassiterite or tin stone, a dioxide of tin. The ore cassiterite before smelting and roasting must be crushed into a powder to remove the arsenic and sulfur from the ore cassiterite. When you smelter the tin you must heat it with carbon to remove the zinc, copper, bismuth, and iron from the tin.
Tin had been used for many things but tins use is dropping rapidly although tin is still used a lot for plating. Plating such things as electical contacts.
Tin is also used as a protective coating. This protective coating can be as small as 15/1,000,000 of an inch. This protective coating protects against rust on steel and other metals. A coating of tin also gives a great look to plain old steel. Tin cans for food prevents weak acids from damaging the inside of the can.
Not many cans are made of tin since aluminum started to be used for cans tins use dropped sharply.
Tin is also used to coat staples, pins, bronze bell, pewter pitchers and many others things.
Another popular tin mixture is tin and lead. Tin and lead make solder for electric work. Battery contacts in the Black and Decker snake lights are also tin plated.
A compound tin salt is used to spray onto glass windows to produce electrically conductive coating for panel lighting and frost free windshields for cars.
One last use for tin is in the making of glass windows that are made by floating molten glass on molten tin. This produces a flat piece of glass to be used as a windows.
Industries basically only use tin for plating for electricity or for protection on there metals such as tin.
Tin is found in Molaya, Bolivia, Indonesia, Zaire, Thailand, Nigeria, but
The purpose for this lab was to use aluminum from a soda can to form a chemical compound known as hydrated potassium aluminum sulfate. In the lab aluminum waste were dissolved in KOH or potassium sulfide to form a complex alum. The solution was then filtered through gravity filtration to remove any solid material. 25 mLs of sulfuric acid was then added while gently boiling the solution resulting in crystals forming after cooling in an ice bath. The product was then collected and filter through vacuum filtration. Lastly, crystals were collected and weighed on a scale.
12. To add a shine to the finished style add a light coat of oil sheen. (See Figure 1.11)
8) Meiri, H., Banin, E., Roll, M., Rousseau, A. Toxic Effects of Aluminum on Nerve Cells and Synaptic Transmission. Progress in Neurobiology, 40: 89-121 (1993).
shape is like crystal cubes. This lead ore has a significant source of silver and the majority of
The oxide of aluminum is amphoteric—showing both acidic and basic properties. The most important compounds include the oxide, hydroxide, sulfate, and mixed sulfate compounds. Anhydrous aluminum chloride is important in the oil and synthetic-chemical industries. Many gemstones—ruby and sapphire, for example—consist mainly of crystalline aluminum oxide.
This showed that silver's value was too high and it made the income for the farmers to be lower. The farmers be in debts if they can pay their taxes. Also in doc 1, Ven Chunji, a official from Ming dynasty, was talking how powerful a piece of silver is and it could impact the person’s social class status. It was saying that 1 piece of silver could make you richer than a man without any slivers even though the man had a lot of other goods. This showed that the social class could be change depended on how much silvers do you own and this made it easier to move up in social classes. In doc 5, Xu Dunque Ming, writer, was talking about how people used to exchange goods for dye clothes but now now they had to pay for dye clothes with silver. This showed that people’s life was depending on silver and silvers were really important to people’s life. They used to care about food but now they just wanted silver because silver can get them anything that they want and be able support their normal basic needs in life like dye clothes. In doc 2, Tomas de Mercado, Spanish scholar, said the high prices from Spain ruined the economy for them because the prices in Asia was much more affordable. So people decided to use their silvers to buy the more Asian
Arsenic is quite common in nature, but is rare as native. It occurs free in nature, but is most often found in the minerals arsenopyrite, realgar and orpiment. There are three allotropes or polymorphic modifications of arsenic; gray, yellow, and black arsenic. Gray arsenic is the most common, the metallic ...
Metal finishing is the critical part and step in preparing the metal for painting. It happens between the bumping stage when the metal is pried, hammered, pulled, and pushed into shape and the filling stage, when the small defects and details in metal finished surfaces are filled before being painted. Any type of finish is applied over your work weather the it be solvent, powder coated, or plastic it will have an index of reflection and ...
...l presented polluting influences, so new innovation must be imagined to dispose of them. Wrought iron was not effectively produced from mineral fuel pig iron until the center of the eighteenth century.
Freon. The gas is partly liquefied by the pressure in the can, but there is a
Starting materials availability: Availability of bulk chemicals that are cost effective must also be considered
8. Continue to heat the crucible, occasionally lifting the lid with tongs to provide oxygen for the reaction
Recycling aluminum is the process by which scrap/ used aluminum can be reused into new and differe...
made from oil and natural gas. Using plastics to replace packaging materials such as metal