because we didnt have the technology to extract it and because it was thought to be a metal that killed you on touch until scientist T. McHisFake discovered that it was infact a very helpful metal.
Aluminum is most easily separated from its bauxite ore by electrolysis. A/C electricity wasn't even invented until the late 19th century. Industrial quantities of dependable, affordable electricity weren't available until well into the 20th century. Aluminum smelters are usually located where bauxite is close by and electricity is cheap, e.g., near dam sites, or coal fired power plants.
Gold and copper were discovered before aluminium and magnesium because they are naturally occurring in a relatively pure state and were easily distinguishable by early humans due to their distinctive properties. Aluminium and magnesium, on the other hand, are typically found in combination with other elements, making their isolation more challenging until the development of advanced extraction techniques in the 19th century.
Aluminium is very difficult to extract from its ore and was costly to produce before modern extraction methods were developed. Additionally, early methods for producing aluminium were inefficient and produced impure metal. It was only in the late 19th century that more efficient extraction methods were discovered, allowing aluminium to be produced on a larger scale and at a more affordable cost.
This depends on the temperature (and pressure)! At 1 bar of pressure, Below 933.47 K (660.32 °C, 1220.58 °F) Aluminium is a solid. Between 933.47 K and 2792 K Aluminium is a liquid. Above 2792 K (2519 °C, 4566 °F) Aluminium is a gas.
In 1800, scientists could not extract aluminum from alumina because the process to extract aluminum from alumina requires high temperatures and the availability of electricity, which were not readily accessible or understood at that time. It wasn't until the late 19th century, with the development of the Hall-Héroult process, that a commercially viable method for extracting aluminum from alumina was discovered.
There is no Latin name for the element specifically as aluminum was not discovered until long after the fall of the Roman empire. The name comes from the Latin word alumen which refers to a salt later found to contain aluminum.
Aluminium wasn't used until the twentieth century due to the following reasons. They are difficult to extract in comparison with iron, they have higher abundance by less surficial concentration.
about 200 BC until the beginning of the twentieth century....
true
In the Pacific Northwest, the south, the Appalachias, and areas around the Great Lakes, produce
False
None. The symbol didn't even exist until the twentieth century.
Adolescence as a separate stage of development was not considered until the twentieth century.
This is not a question, but a statement. Please rewrite.
The concept of providing pensions for retired employees did not begin until the nineteenth century in Europe and did not significantly spread to the United States until the early twentieth century
The technology was not available to permit space travel until the mid twentieth century.
Uniformitarianism was a common belief among earth scientists until the later part of the twentieth century.
Uniformitarianism was a common belief among earth scientists until the later part of the twentieth century.