By : Olaya Álvarez Gómez
Start
PERIODIC TABLE ELEMENT
10. Deletions
11. Biological role.
9. Safety and precautions
5.Production
4. Characteristics
12. bibliography
8. Applications
7. Alloys
6. Compound
3. Abundance on earth/in the universe
2. History.
1. Name and symbol.
INDEX
NAME: gOLD sYMBOL: aU
the first traces of gold working date back to the fourth millennium a.C., in the Chalcolithic period of prehistory, and were found in the necropolis of Varna. In the western region of Bulgaria. In addition, it is mentioned in the biblical Old Testament, and in ancient Egypt it was used in the hieroglyphs of the name of the pharaoh Dyer. From the beginning, gold was used to manufacture decorative objects. In medieval times, gold was attributed with sanitizing and therapeutic properties. The majority use of gold, along with other similar metals, was in the minting of coins. Its search and extraction was and continues to be a sought-after economic activity.
HISTORY
50.000 tons
Abundance on earth/in the universe
7.
6.
5.
Characteristics
1.
2.
3.
4.
Gold production in the United States: It produced 222 tons, making it the 4th largest gold producer in the world. 4. Gold production in Canada: produced 189 tonnes of gold, making it the 5th largest producer in the world.
Gold production in Australia: produced 297 tonnes of gold. Becoming the 3rd largest producer. It is also one of the countries with the largest mines.
Gold production in China: it is the country with the highest gold production worldwide. It is capable of extracting more than 400 tons in a single year.
Production
Compound
Between 58% and 75% pure gold, which corresponds to white gold between 14 carats and 18 carats respectively.
1.
Nickel, palladium, rhodium and manganese in varying amounts.
2.
Alloy
Applications
4.-ODONTOLOGÍA.
2.-JEWELRY.
3.-MEDICINE.
1.-COINS.
8.-GLASS INDUSTRY.
6.-ELECTRICAL INDUSTRY.
7.-COMPUTING.
5.-FOOD SUPPLEMENTS.
Proper storage: Gold should be stored in a dry and safe place. A safe deposit box or safe deposit box at a bank are popular options. Gentle cleaning: If you decide to clean your gold, be sure to do so with a soft, non-abrasive cloth. Avoid harsh chemicals that can damage the surface. Avoid contact with other metals: Gold can be scratched or damaged if it comes into contact with other metals. Keep your gold pieces separate from other jewelry or metals. Adequate insurance: Consider getting insurance for your gold pieces. If something happens, you'll have peace of mind knowing you're financially protected.
Safety and precautions
protect
Chemicals: Contact with chemicals such as perfumes, creams, cleaning products, among others, can affect the quality of gold and cause it to deteriorate. Hot springs: The water in thermal pools can contain chemicals that damage the gold and accelerate its oxidation. Salt: Sea salt can corrode gold and cause it to discolor. It is important to remove jewelry before bathing in the sea or pool. Sweat: Jewelry's constant contact with sweat can also affect its quality and cause it to lose its shine.
safety
Scientists warn that gold could become extinct by 2050 due to the current rate of extraction
Deletions
Biological role
Native gold, i.e. in its pure form and without chemical combinations, has been valued for its unmatched brilliance and beauty. In addition, its rarity in the wild made it a prized and desired resource.
Bibliography
https://concepto.de/oro/#ixzz8K50A9EOq El misterio de la abundancia de oro en el Universo que los científicos no consiguen resolver (eleconomista.net) ¿Cúal es la producción de oro mundial? - Joyería Goldstein (joyeriagoldstein.es) ¿Cuál es la composición química del oro blanco? - YuBrain Las 10 principales aplicaciones del oro - Top10de.com Cómo proteger y almacenar el oro: consejos para evitar robos y pérdidas • InnovaMinex Blog Cómo proteger y almacenar el oro: consejos para evitar robos y pérdidas • InnovaMinex Blog geologiaweb.com/minerales/por-que-el-oro-es-valioso/
THANK YOU!
1.
It is a chemical element with atomic number 79. On the periodic table it is found alongside other mintable metals in group 11.
2.
It is a shiny transition metal, gold or yellow in color. Highly usable in jewellery.
3.
It does not offer a chemical reaction with most known substances. It is also immune to air and moisture.
4.
Alloys can be made with gold.
5.
It is a good conductor of heat and electricity.
6.
Culturally, it is associated with wealth and power.
7.
70% of the gold mined goes to jewellery.
1.
Since ancient times it has been a metal used for the production of coins, using directly or indirectly. Many of them are now highly collectible.
2.
From necklaces, rings, bracelets, watches, and more, gold is present in multiple accessories that are manufactured for the jewelry industry.
3.
Different forms of gold have been used for research and medicine, with discoveries that could, for example, discover antigens on the cell surface.
4.
Due to its properties, gold has also been present in dentistry for the manufacture of artificial crowns and dental bridges.
5.
Fine gold foil, as well as gold dust, has been known to have been added to certain types of food, specifically desserts and beverages.
6.
Many appliances include circuits and conductors that are usually made of gold, as this metal is an excellent conductor of electricity.
7.
In computing, gold also has applications, mainly in memory chips that usually include it in the form of small sheets.
8.
Some types of specialty glasses contain a gold pigment that is used to give a more attractive finish to the pieces.
