my homework is due in tomorrow and i need five facts about aluminum its flexible i know but what else?
Aluminium is by far the most common metal on the Earth’s surface. It makes up 8% of the Earth’s crust. Aluminium never occurs naturally in its pure form; in the ground it is combined with other chemicals as minerals in ore rocks. The major source of aluminum is layers of soft ore called bauxite, which is mostly aluminum hydroxide. Half of the soft drinks cans in the USA are made from recycled aluminum Alum powders made from aluminum compounds were used 5000 years ago for dyeing. Pure aluminum was first made in 1825 by the Danish scientist Hans Oersted. Aluminium production was the first industrial process to use hydroelectric power when Paul Heroult set up a plant on the river Rhine in 1887. Aluminium is silver in color when freshly made, but it quickly tarnishes to white in the air. It is very slow to corrode. Aluminium is one of the lightest of all metals. It weighs just one-third as much as steel. Aluminium oxide can crystallize into one of the hardest minerals, corundum, which is used to sharpen knives. Aluminium melts at 650°C and boils at 2450°C. Each year 21 million tonnes of aluminum are made, mostly from bauxite dug up in Brazil and New Guinea. Although aluminum is common in the ground, it is worth recycling because extracting it from bauxite uses a lot of energy. .
Take a look on this website - They have some interesting information about aluminium - www.bwcaluminium .uk
