CHALK & BLACKBOARD PRESENTATION
21.Hà Thị Mỹ Oanh
Created on February 11, 2023
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Transcript
IV. APPLICATIONS AND NATURAL OCCURRENCE
-Aluminum powder is mixed with iron oxide powder( called thermite mixture) to perform thermile reaction for welding railway tracks.
-Aluminum is light, well electrically conductive; therefore, aluminum, as an alternative to copper, used as an electric wire. Due to its good electrical conductivity, slow rost formation; and non-toxicity, aluminum is used to make kitchen utensils.
-Aluminum and aluminum alloys have a beautiful silvery color, therefore they are used in house construction and furnishing.
1. APPLICATIONS
-An advantage of aluminum and aluminum alloy is their lightness, stability in air and water, therefore they are used as a material to manufacture aircraft, cars, rockets, and spaceships.
APPLICATIONS
Criolit(3NaF.AlF3)
Đấtsét(Al2O3.2SiO2.2H2O
Boxit (Al2O3.2H2O)
-Aluminum compounds are everywhere, such as in clay.
-Aluminum is the third most abundant element in the Earth'"s crust after oxygen and silicon.
2. NATURAL OCCURRENCE
-Aluminum is an active metal, so in nature, it only exists in form of compounds.
Thank you teachers and friends for listening together
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