foundries+3

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//**2A ESO**//
1ºmiguel: what is the chemical element of aluminion?

It`s AI

2ºPaula B: what are the names of the minerals i named before?

Emerald, aquamanne, red beryl, pin beryl, colourless beryl.

3ºAndrea and Bea:????¿¿¿where is the question?

4ºCarmen and Salomé: video restricted, can`t view the question

5ºIrene T: what percent of the alloy chronium has?

12 percent

6º:Rogelio:could you say a application of cobalt sayed in the video?

High temperaturess steel alloy

7º:Alejandra:Can`t find question

8º claudia and paula J: cant find question

9ºálvaro: doesnt say the question

10ºDavid:Name 5 objects made of iron.

Wheels,bridges,cars, trains, bus

11ºgillermo: how many uses has lead? Batteries, solders, balances, alloys and cables

12ºjazmin: wheres question¿

13º javier:where is mercury found?

Mercury is found all over the world as an ore in combination with cinnabar. It tends to be found in high concentrations in geographic regions where there are hot springs or volcanos. China and Kyrgyzstan are the modern global leaders in mercury production, but mercury has been known, produced and used since ancient times. Trace amounts of mercury also occur naturally in fish and other seafood.

14ºSara c: why is the nochrome so expensive?

Chromium is an ingredient for stainless steel, a material used to make everything from kitchen utensils to precision tools and surgical equipment. It is resistant to heat and chemicals. This makes it a good material for making strong, corrosion-resistant alloys but also means it expensive and difficult to process. Most chromium is extracted from an ore called chromite, which contains oxygen and iron that are removed by processing.

A portion of chromium as small a 10 percent added to iron or steel makes it corrosion resistant. Chromium largely replaced nickel and zinc as the primary plating material because of its superior hardness and resistance to chemical processes. About 80 percent of world consumption of chromate is in the chemical and metallurgical industries. Many chromates are poisonous. They damaged red blood cells if they enter the skin.

Chromium is named after the Greek word chrome, meaning colors, because of the wide variety of hues by chromium compounds. It is a key ingredient in mineral and metallic colors and is responsible for boosting the color of many gems, including emeralds. rubies and some sapphires. Chromate compounds with barium, lead and zinc produce the pigments lemon chrome, chrome red, zinc yellow and zinc green.

About two thirds of the world's chromate production comes from Kazahkstan and South Africa. Other sources include Turkey, Zimbabwe, the Philippines, and Yugoslavia. World Production, By Country (Metric tons, gross weight, 2006): 1) South Africa 7418326; 2) India 3600400; 3) Kazakhstan 3600000; 4) Turkey 1059901; 5) RussianFederation 966065; 6) Brazil 615900; 7) Zimbabwe 600000; 8) Finland 548713; 9) Australia 252867; 10) Iran, Islamic Republic Of 225000; 11) China 200000; 12) Pakistan 199000; 13) Madagascar 132335; 14) Viet Nam 90000; 15) Oman 70500; 16) Albania 65000; 17) Philippines 46728; 18) Cuba 34000; 19) Sudan 22000 [Source: United States Geological Survey (USGS) Minerals Resources Program] 15º: alberto, tell a object made up of stainless steel

spoon

16ºyoan: what coulour is the collier in this video?

Golden

17ºcarlos P: in which countries can you find platinum?

South Africa (5030000 ounces) Russia (850000 ounces) United States of America (385000 ounces) Zimbabwe Canada" 18º: irene p: where does silver come from?

Mexico

19º silvia sara and Lucia: steel was know in...

antiquity

20:Tania: how many forms have the tin?

7

21º:Carlos Acosta: what are the uses of titanium?

Uses of Titanium

Titanium alloys are used in aircraft (including helicopters), armor plating, naval ships, spacecraft and missiles. Titanium alloys do not fatigue easily, are strong and are resistant to corrosion so they are perfect for use in the above items.

Most titanium is converted to titanium oxide. This is the white pigment found in toothpaste, paint, paper and some plastics. Cement and gemstones also contain titanium oxide. Fishing rods and golf clubs are also made stronger through the use of titanium oxide.

Heat exchangers in desalination plants (which turn sea water into drinking water) are made from titanium as it is resistant to corrosion in sea water.

Body piercings are generally made out of titanium. Titanium is perfect for this as it is easily colored and is inert (will not react with other things).

Surgical instruments, wheelchairs and crutches are all made out of titanium for high strength and low weight!

Dental implants are made with titanium. People with titanium dental implants can still go in an MRI machine!

Hip balls and joint replacements are made out of titanium and they can stay in place for around 20 years.

Many firearms (guns) are made from titanium as it is strong and lightweight.

The body of a laptop is often made from titanium.

Titanium is occasionally used in buildings.

Football helmet grills, tennis rackets, cricket helmets and bicycle frames are all made from titanium.

22º:Ángel: what is the atomic number¿ 30