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Why should aluminium ore be treated with sodium hydroxide before electrolysis?
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How is water treated before its piped into your homes?
it cleans it and takes the bacteria out of the water
Can spring steel be heat treated?
Definately spring steel can be heat treated and it has to be heat treated before it can be functioned as a spring. The common way to heat treat spring steel is by quenching and tempering.
What is the expansion of look before you leap?
The expression look before u leap means that someone should always look at a situation logically, and reason out beneficial ideas before taking decisions. That is, your decisions should be made out of a treated issue.
Why does aluminium foil heat up at hair dresser during hilights?
aluminum foil is .0007 inches thick, so it takes it a couple of seconds before it cools down. that's why its not hot when u take it out of the oven..hope that helps
Does the wave nouveau perm system contain sodium hydroxide aka is it considered lye?
No it does not. It contains ammonium thioglycolate, which is milder. It won't make the hair bone straight before the rods are put on, but it won't damage the hair or scalp, either.
Why is the electrolysis of aluminium oxide endothermic?
Because before electrolysis the oxide must be melted.
Why is pure aluminium oxide mixed with cryolite before electrolysis?
to lower its melting point as the process is very expensive :)
What was used to make airplanes before aluminium?
Wood and fabric were used before aluminium.Wood and fabric were used before aluminium.
What was used before aluminium for cars?
Steel.
Why were gold and copper discovered before aluminium and magnesium?
Both Magnesium and aluminium react in the air so it would be harder to mine
Why was aluminium rare during Napoleonic times?
Aluminium is produced by electrolysis of the mineral bauxite. In Napoleonic times there was no cheap electricity :P Aluminum metal was rare because the Hall-Heroult process of running electricity through molten cryolite had not been discovered yet. Aluminum could only be produced with very small yield before this. Aluminum compounds such as bauxite are plentiful, but it is incredibly rare to find ores containing elemental aluminum.
Why was sodium not extracted until 1807 explain fully?
The main extraction method for sodium is electrolysis. This extraction method was not discovered until 1807.
How is wator treated before it comes to your house?
how is wator treated before it comes to your house
Why is cryolite used in the manufacture of aluminium?
It's used as a flux. It melts at a significantly lower temperature than aluminum oxide ores, but they will dissolve in molten cryolite. This means less energy is required to extract the aluminum from the ores than if they had to be heated to their melting temperatures.
What is the explanation for the apparent unreactivity of aluminium?
Aluminum does not react very well with the oxygen in the air but it is in fact quite a reactive metal. The reason it doesn't react is that it has already reacted,but the aluminum oxide has formed in a thin, tightly bonded layer that protects the aluminum foil from further attack.
What was used to make cans before aluminium?
The original material was sheet steel.
Why must bauxite be purified before it undergoes electrolysis?
because if it wasnt then the aluminum would still have imputites in it after smelting
