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There are total 118 elements found till today. Out of them, 92 elements are naturally found and 26 elements are artificially discovered. They have their own properties. Depending upon their properties, they are classified as metals, non- metals and metalloids. Among them, metals are widely used. Those elements which have positive electric charge typically with a shiny surface and a good conductor of heat and electricity are known as metals. Metals are malleable and ductile. Generally, metals have high boiling points. Metals lie on D-Block of the periodic table.

Gold

Gold is a soft, lustrous yellow metal. It is a 'D' block transition element in the periodic table. It belongs to the period 6 and group IB. Some important ores of gold are:

  1. Calaverite
  2. Sylvanite
  3. Nagyagite
  4. Petzite
  5. Krennerite
    Source: www.funonsite.com Fig: Gold
    Source: www.funonsite.com
    Fig: Gold

Physical properties of gold

  1. Gold possesses a lustrous yellow color.
  2. It has a melting point 1063°C and boiling point of 2610°C
  3. It is a heavy metal with specific gravity 19.3.
  4. It is a good conductor of heat and electricity.
  5. It is less reactive metal.

Uses of gold

  1. It is used for making jewelry, coins, and medals.
  2. It is used for making gold leaf electroscope.
  3. It is used for making alloys.

Silver

Silver is the "D" block transition element. It belongs to the group IB of the periodic table. Some important ores of silver are:

  1. Argentite
  2. Horn silver
  3. Silver copper glance
  4. Pyrolite
    Source: dreamsrecycled.com Fig: Silver
    Source: dreamsrecycled.com
    Fig: Silver

Physical properties of silver

  1. Silver is white lustrous metal.
  2. Its specific gravity is 10.52.
  3. Its melting point is 9600C and boiling point is 19550C.
  4. It is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

Uses of silver

  1. It is used to make coins, jewelry, and decorative articles.
  2. Silver bromide is used in photography. It is used in electroplating.

Copper

Copper belongs to Group IB and period 4 of the periodic table. It is and' block element. It is also known as a transition element. Important ores of copper are:

  1. Cuprite (Ruby copper)
  2. Copper pyrite ( Chalcopyrite)
  3. Copper glance ( Chalcocite)
  4. Malachite
    Source; pazmetals.com Fig: Copper
    Source; pazmetals.com
    Fig: Copper

Physical properties of copper

  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 2350°C.

Uses of copper

  1. Copper is used for making electrical goods and cables.
  2. It is used for making copper leaf electroscope.
  3. It is used for making utensils, coins, jewelry, etc.
  4. It is used in the manufacture of dyes and pesticides.

Iron

Iron is a transitional element and known as "d" block element. It belongs to Group VIII of the periodic table. It is the first transition series in the fourth period. On the left side of it, manganese is located whereas on the right-hand side, cobalt is found. Important ores of iron are:

  1. Hematite
  2. Magnetite
  3. Siderite
  4. Limonite
  5. Iron pyrite
    Source; pixabay.com Fig: Iron
    Source; pixabay.com
    Fig: Iron


Physical properties of Iron

  1. Pure iron is a silvery white metal and lustrous metal.
  2. Its specific gravity is 7.86.
  3. Iron melts at 1550ºC and boils at 2400ºC.
  4. Iron is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

Uses of Iron

  1. It is used in the manufacture of steel.
  2. It is used in making household utensils.
  3. It is used as a catalyst in different chemical reactions.
  4. It is used in making rods, pipes, chains, vehicles, railway tracks, etc.

Aluminium

Aluminum is a 'p' block element. It belongs to the period 3 and group III A of the periodic table. Some important ores of aluminum are:

  1. Bauxite
  2. Feldspar
  3. China clay
  4. Caryolite
    Source: www.dhk.be Fig: Aluminium
    Source: www.dhk.be
    Fig: Aluminium

Physical properties of aluminium

  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.

Uses of aluminum

  1. Aluminium is used for making utensils, frames, electrical appliances, etc.
  2. It is used for making electrical wire.
  3. It is used for making alloys and coins.
  4. Its alloys are used for making sailboats, aircraft, etc.
  5. It is used for making aluminum foils which are used for wrapping food, cigarette, etc.

  • Those elements which have positive electric charge typically with a shiny surface and a good conductor of heat is known as metals. 
  • Generally metals have high boiling points. Metals lie on D-Block of the periodic table.
  • Gold is a soft, lustrous yellow metal. It is a 'D' block transition element in the periodic table.
  • Silver is the "D" block transition element. It belongs to the group IB of the periodic table. 
  • Copper belongs to Group IB and period 4 of the periodic table. It is a 'D' block element.
  • Iron is a transitional element and known as 'D' block element. It belongs to Group VIII of the periodic table.
  • Aluminium is a 'p' block element. It belongs to the period 3 and group III A of the periodic table.
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Very Short Questions

The ores of iron are:

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

The ores of gold are:

  1. Calaverite
  2. Sylvanite
  3. Nagyagite
  4. Petzite
  5. Krennerite

The ores of silver are:

  1. Argentite
  2. Horn silver
  3. Silver copper glance
  4. Pyrolite

The ores of copper are:

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

The ores of iron are:

  1. Hematite
  2. Magnetite
  3. Siderite
  4. Limonite
  5. Iron pyrite

The properties of gold are:

  1. Gold possesses a lustrous yellow color.
  2. It has a melting point 1064°C and boiling point of 2700°C
  3. It is a heavy metal with specific gravity 19.3.
  4. It is a good conductor of heat and electricity.
  5. It is less reactive metal.

The uses of gold are:

  1. It is used for making jewelry, coins, and medals.
  2. It is used for making gold leaf electroscope.
  3. It is used for making alloys.

The properties of silver are:

  1. Silver is white lustrous metal.
  2. Its specific gravity is 10.52.
  3. Its melting point is 9610C and boiling point is 21620C.
  4. It is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

The uses of silver are:

  1. It is used to make coins, jewelry, and decorative articles.
  2. Silver bromide is used in photography. It is used in electroplating.

The properties of copper are:

  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 1538°C and its boiling point is 2862°C.

The uses of copper are:

  1. Copper is used for making electrical goods and cables.
  2. It is used for making copper leaf electroscope.
  3. It is used for making utensils, coins, jewelry, etc.
  4. It is used in the manufacture of dyes and pesticides.

The properties of iron are:

  1. Pure iron is a silvery white metal and lustrous metal.
  2. Its specific gravity is 7.86.
  3. Iron melts at 1538ºC and boils at 2862ºC.
  4. Iron is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

The uses of iron are:

  1. It is used in the manufacture of steel.
  2. It is used in making household utensils.
  3. It is used as catalyst in different chemical reactions.
  4. It is used in making rods, pipes, chains, vehicles, railway tracks, etc.

The physical properties of aluminium are:

  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 24700C.
  4. It is a good conductor of heat and electricity.
  5. It is malleable and ductile in nature.

The uses of aluminium are:

  1. Aluminum is used for making utensils, frames, electrical appliances, etc.
  2. It is used for making electrical wire.
  3. It is used for making alloys and coins.
  4. Its alloys are used for making sailboats, aircraft, etc.
  5. It is used for making aluminum foils which are used for wrapping food, cigarette, etc.

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  • Which one is not the ore of gold?

    Mica
    Nagyagite
    Petzite
    Sylvanite
  • Which one is not the ore of silver?

    Horn silver
    Argentite
    Sylvanite
    Pyrolite
  • Which one is not the ore of copper?

    Chalcopyrite
    Cuprite
    Nagyagite
    Copper glance
  • Which one is not the ore of iron?

    Magnetite
    Petzite
    Siderite
    Hematite
  • Which one is not the ore of aluminium?

    Calaverite
    Feldspar
    Bauxite
    Caryolite
  • Melting point and boiling point of gold is ______ respectively.

    15500C and 24000C
    10830C and23500C
    10640C and 27000C
    9600C and 19550C
  • Melting point and boiling point of silver is ______ respectively.

    10830C and 23500C
    9610C and 21620C
    10630C and 26100C
    15500C and 24000C
  • Melting point and boiling point of copper is ______ respectively.

    10630C and 26100C
    10850C and 25620C
    15500C and 24000C
    9600C and 19550C
  • Melting point and boiling point of iron is ______ respectively.

    9600C and 19550C
    10630C and 26100C
    10830C and 23500C
    15380C and 28620C
  • Melting point and boiling point of aluminium is ______ respectively.

    6600C and 24700C
    10830C and 23500C
    10630C and 26100C
    9600C and 19550C
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Name the metal that is extracted from chalcopyrite ore and write any three uses of that metal


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sitala subedi

What is ore!!


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