Aluminum

Subject: Science

Find Your Query

Overview

Aluminum is a multipurpose metal lies in group 'IIIA' and period '3' in periodic table. This note provides us an information about properties of Aluminium.
Aluminum

Symbol: Al

Atomic No: 13

Atomic weight: 27

Valency: 3

Electronic configuration: 1s2,2s2,2p6,3s2,3p1

Position in the periodic table:Aluminum is a 'p' block element. It belongs to period 3 and group III A of the periodic table.


Important ores of aluminum

  1. Bauxite
  2. Feldspar
  3. China clay
  4. Caryolite

Properties

Physical properties

  1. Aluminum is a bluish white shining metal.
  2. It is the lightest metal and its specific gravity is 2.7.
  3. Its melting point is 6600C and boiling point is 18000C.
  4. It is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

Chemical properties

Action with acids:

Abroad Studies Opportunities
  1. Aluminum reacts with dilute hydrochloric acid and dilute sulphuric acid and to give hydrogen.

    2Al + dil. 6HCl → 2AlCl3 + 3H2

    2Al + dil. 3H2SO4 → Al2(SO4)3+ 3H2

  2. Aluminum reacts with hot concentrated sulphuric acid andsulphur

    2Al + conc.6H2SO4 → Al2(SO4)3+ 3SO2+ 6H2O

  3. Aluminum has no reaction with dilute and concentrated nitric acid.

Uses of aluminum

  1. Aluminum is used for making utensils, frames, electrical appliances, etc.

    http://sam.davyson.com/as/physics/aluminium/siteus/resources/cook.jpg

    Fig: Aluminum utensil

    https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcQxkEqDaMZZLQgHFyhxiDWWC-S8UQkJhdVSAAzxXFDjT-a9EbdtkA

    Fig: Aluminum frame
  2. It is used for making electrical wire.

    http://www2.uncp.edu/home/mcclurem/ptable/aluminum/Al_3_2.jpg

    Fig: Aluminum wire

  3. It is used for making alloys and coins.
  4. Its alloys are used for making sailboats, aircrafts, etc.
  5. It is used for making aluminum foils whichis used for wrapping food, cigarette, etc.

    http://www.haomei-aluminium.com/images/pic/aluminum-foil.jpg

    Fig: Aluminum foil

    Fig: Aluminum foil container
Things to remember
  • Aluminum 1s2,2s2,2p6,3s2,2p1
  • The important ores of aluminum are bauxite, feldspar, china clay and caryolite.
  • The physical properties of aluminium are: bluish white shining metal, lightest metal, malleable and ductile in nature, melting point is 6600C and boiling point is 18000C.
  • Aluminum has no reaction with dilute and concentrated nitric acid.
  • Aluminium is used to make alloys and coins, make aluminum foils which is used for wrapping food, make utensils, electrical wire, frames, electrical appliances, etc.
  • It includes every relationship which established among the people.
  • There can be more than one community in a society. Community smaller than society.
  • It is a network of social relationships which cannot see or touched.
  • common interests and common objectives are not necessary for society.
Videos for Aluminum
Aluminium
Aluminium (or Aluminum) - Periodic Table of Videos
Aluminium Extraction - Chemistry in Action
Aluminium Extraction - Royal Society of Chemistry
Aluminum - 1941 Mining, Production and uses of Aluminium - Educational Documentary - Ella73TV
Aluminum metal reacts with concentrated sulfuric acid
C.1.9 - Describe the main properties and uses of aluminum and its alloys.
Electrolysis - Aluminium Extraction
Electrolysis: Extraction of aluminium from alumina in the Hall-Heroult Cell.
From bauxite to aluminum - or how a printing plate is made.
How It's Made Aluminum
Hydrochloric Acid reacting with Aluminum
Kaiser Aluminum Extrusion Process
Reaction of aluminium with acids
Questions and Answers
When aluminum is heated with chlorine, it gives aluminum chloride. 2Al + 3Cl2 → 2AlCl3

Hydrochloric acid is kept in a glass or plastic container because it does react with them but not in aluminum container because aluminum dissolves readily in hydrochloric acid. 2Al + 6HCl → 2AlCl3 + 3H2

The two ores of aluminum are: Bauxite (Al2O3.2H2O) and Feldspar [K (AlSi3O8)]
The external cover of the airplane is made from aluminum instead of iron because: a. Aluminum is lighter than iron. b. Rusting does not occur on aluminum while rusting occurs on iron when it is exposed in air.
Aluminum metal is reactive elements so it reacts with alkali such as caustic soda or caustic potash solution to form meta-aluminate with the release of hydrogen gas. Therefore, aluminum vessels should not be washed with powder containing alkali.

The balanced chemical equation for the reaction between dilute hydrochloric is acid and aluminum. Al + dil. HCl → AlCl3 + H2

2Al + dil. 6HCl → 2AlCl3 + 3H2

Salt i.e. Aluminum chloride is formed from the reaction.

When aluminum is heated in presence of chlorine, it gives aluminum chloride. 2Al + 3Cl2 → 2AlCl3

Quiz

© 2019-20 Kullabs. All Rights Reserved.