Copper

Subject: Science

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Overview

Copper is the oldest human used metals.Copper is used to make electrical goods and cables, manufacture of dyes and pesticides, make utensils, coins, jewelry, etc. For more information on copper, its uses and properties please click on the title.
Copper

Symbol: Cu
Atomic No: 29
Atomic weight: 63.57
Valency: 1 and 2
Electronic configuration: 1s2,2s2,2p6,3s2,3p6,3d10,4s1
Position in the periodic table: Copper belongs to Group IB and period 4 of the periodic table. It is a 'd' block element. It is also known as transition element.

Important ores of copper

  1. Cuprite (Ruby copper)
  2. Copper pyrite ( Chalcopyrite)
  3. Copper glance ( Chalcocite)
  4. Malachite

Properties

Physical

  1. Copper is a red brownish metal with a metallic luster.
  2. It is a good conductor of heat and electricity.
  3. Its specific gravity is 8.95.
  4. It is highly malleable and ductile in nature.
  5. Its melting point is 1083°C and its boiling point is 2562°C.

Chemical properties

Action with acids

Abroad Studies Opportunities
  1. Reaction with hydrochloric acid Copper does not react with hydrochloric acid in normal condition but Copper react with the dilute hydrochloric acid in the presence of air to form cupric chloride.

    2Cu + 4HCl + O2 → 2CuCl2 + 2H2O

    Copper reacts with the concentrated hydrochloric acid, and it forms cuprous chloride and hydrogen gas.

    2Cu + 2HCl → 2CuCl + H2

  2. Reaction with sulphuric acid: Copper does not react with the sulphuric acid in normal condition but Copper reacts with the warm dilute sulphuric acid in the presence of air to producecoppersulphate and water.

    2Cu + 2H2SO4 + O2 → 2CuSO4 + 2H2O

    Copper reacts with hot and concentrated sulphuric acid to produce copper II sulphate and sulphur dioxide.

    Cu + conc. 2H2SO4 → CuSO4 + 2H2O + SO2

  3. Reaction with nitric acid : Copper reacts with hot dilute nitric acid to form copper(II)nitrate,nitricoxide and water.

    3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO

    Copper reacts with hot concentrated nitric acid to give copper nitrate, nitrogen dioxide and water.

    Cu + conc. 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2

Uses of copper

  1. Copper is used for making electrical goods and cables.

    http://www.prestigeelectric.net/wp-content/uploads/2009/04/copper-electrical-wire.jpg

    Fig: Copper wire

    http://im-3.eefa.co/fg-copper-s3.jpg

    Fig: Copper refrigerator
  2. It is used in electroplating.

    http://www.middleschoolchemistry.com/atomsworld/wp-content/uploads/2012/08/electrochemistry1.jpg

    Fig: Copper electroplating

  3. It is used for making utensils, coins, jewelry, etc.

    http://www.asianartcreations.com/handicrafts-india/copper-utensils-kalash.jpg

    Fig: Copper utensil

    http://www.coinlink.com/News/images/1877_blay_pcgs.jpg

    Fig: Copper coin
  4. It is used in the manufacture of dyes and pesticides.
Things to remember
  • Copper belongs to Group IB and period 4 of the periodic table. It is a 'd' block element. It is also known as the transitional element.
  • Copper is used for making electrical goods and cables, manufacture of dyes and pesticides, make utensils, coins, jewelry, etc.
  • The properties of copper are: red brownish metal with a metallic luster, highly malleable and ductile in nature, Its melting point is 1083°C and its boiling point is 2562°C.
  • 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 Copper
CBSA Webinar: Introduction to Copper and Copper Alloys
Copper ***
Copper Mining and Refining (Redox)
Copper Mining and Smelting - 1949 Educational Documentary - Ella73TV
Copper sulphate crystallization | Crystallisation | Chemistry
How It's Made-Copper
Reaction of copper with acids
Reaction of Copper with Nitric Acid
The Many Uses of Copper Alloys, sponsored by ABC Metals, Inc
The Mining Process at Copper Mountain Mine
Questions and Answers
The two properties of copper that makes pots and pans are: a. Copper is malleable and ductile. b. Copper is good conductor of heat.

Copper reacts with hot dilute nitric acid to form copper nitrate,nitric oxide and water.

3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO

Copper reacts with hot concentrated nitric acid to give copper nitrate, nitrogen dioxide and water.

Cu + conc. 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2

Copper- 1s22s22p63s23p63d104s1
Iron- 1s2 2s2 2p63s2 3p63d64s2

Copper is used to make wires because it is maliable and ductile. Copper is also used in electroplating as it resist rusting.
Quiz

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