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Why can you get pure gold straight out of the ground but you need furnaces or electrolysis to get iron or aluminum?
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Where can aliminium be found?
Metallic aluminum is produced commercially from the mineral bauxite, a hydrated oxide of aluminum. The top five bauxite producing countries (in 2007) are Australia, China, Brazil, India and Guinea. Metallic aluminum is smelted from bauxite by electrolysis, which is very energy-intensive. Combined with the fact that aluminum, more so than any other substance, can be recycled with no degradation in its properties, there is a strong economic incentive to recycle aluminum products. According to the International Aluminum Institute, secondary (recycled) aluminum production was 16 million tonnes in 2006. That can be compared to an estimated 33.4 million tonnes of primary (mined) aluminum production in the same year. So, about a third of the world's aluminum can be found in the recycling stream and two-thirds in the ground.
Why is coal crushed and ground into a fine powder before it is blown into the boiler furnaces?
More surface area for faster (and hotter) burning
What is the number of electrons in the valence shell of an atom of aluminum in the ground state?
2 valence electrons are in an aluminum atom in the ground state.
Can coal go on fire?
Coal burns but it is quite difficult to make it do so, in power plants it in ground down into a dust then blown into the furnaces.
What is the correct electron dot symbol for an aluminum atom in the ground state?
Al with 3 dots
What is the process used to smelt aluminum?
Aluminum is an element that naturally comes in many different compounds in the ground. The ore (bauxite mainly) has to be smelted and refined to produce pure aluminum.
Where can aliminium be found?
Metallic aluminum is produced commercially from the mineral bauxite, a hydrated oxide of aluminum. The top five bauxite producing countries (in 2007) are Australia, China, Brazil, India and Guinea. Metallic aluminum is smelted from bauxite by electrolysis, which is very energy-intensive. Combined with the fact that aluminum, more so than any other substance, can be recycled with no degradation in its properties, there is a strong economic incentive to recycle aluminum products. According to the International Aluminum Institute, secondary (recycled) aluminum production was 16 million tonnes in 2006. That can be compared to an estimated 33.4 million tonnes of primary (mined) aluminum production in the same year. So, about a third of the world's aluminum can be found in the recycling stream and two-thirds in the ground.
How were roman public baths made?
Sometimes on top hot springs in the ground, or where water could be pumped from-there were furnaces that heated the water.
Why is coal crushed and ground into a fine powder before it is blown into the boiler furnaces?
More surface area for faster (and hotter) burning
What is the number of electrons in the valence shell of an atom of aluminum in the ground state?
2 valence electrons are in an aluminum atom in the ground state.
Can coal go on fire?
Coal burns but it is quite difficult to make it do so, in power plants it in ground down into a dust then blown into the furnaces.
If you are travelling at X speed and fire something the opposite direction at X speed will it fall straight to the ground?
Yes, it will fall straight to the ground.
Which metals can be used straight out of the ground?
gold
Can you dig aluminum out of the ground?
Yes, bauxite is the ore of aluminium (aluminum). It is normally found close to the surface so is strip or quarry mined.
Does a lever move straight with the ground?
I have no ferkin idea
Can aluminum be recycled?
Yes, aluminum is easy to recycle and uses far less energy than making new aluminum from bauxite dug out of the ground. So recycle all those cans!
What happens to pieces of aluminum in a pile of scrap metal when an electromagnet nears the pile?
If the aluminum has iron attached to it it will be picked up by the magnet otherwise it will remain on the ground.
