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Page 1: Metals

MetalsBy Arshia Jain 8C

ScienceMrs. Arora

AOI: Human IngenuityMy Project is linked to Human Ingenuity because it shows the date of discovery and

the person who discovered it.

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Reactivity Series

• Potassium• Sodium• Lithium• Calcium• Magnesium• Aluminum• Zinc• Iron• Tin• Lead• Copper• Silver• Gold• Platinum

Most Reactive

Least Reactive

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Metals Timeline

Metals Discovery DateGold circa 3000 BC Iron Known to the ancientsTin Known to the ancientsSilver Known to the ancientsPlatinum 1735 Zinc 1746Potassium 1807Sodium 1807 Lithium 1817

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Potassium

Symbol: K Atomic Number: 19 Atomic Mass: 39Melting Point: 63.65 °C Number of Protons/Electrons: 19 Number of Neutrons: 20 Classification: Alkali Metal Color: silvery Date of Discovery: 1807 Discoverer: Sir Humphrey Davy Name Origin: potash Symbol Origin: From the Latin word kalium Uses: glass, soap Obtained From: minerals (carnallite)

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Sodium

Symbol: Na Atomic Number: 11 Atomic Mass: 22.98977 Melting Point: 97.72 °C Number of Protons/Electrons: 11 Number of Neutrons: 12 Classification: Alkali MetalColor: silvery Date of Discovery: 1807 Discoverer: Sir Humphrey Davy Name Origin: soda (Na2CO3) Symbol Origin: From the Latin word natrium (sodium) Uses: medicine, agriculture Obtained From: table salts and other foods

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Lithium

Symbol: Li Atomic Number: 3 Atomic Mass: 6.941 Melting Point: 180.54 °C Number of Protons/Electrons: 3 Number of Neutrons: 4 Classification: Alkali MetalColor: silvery Date of Discovery: 1817 Discoverer: Johann Arfvedson Name Origin: From the Greek word lithos (stone) Uses: batteries, ceramics, lubricants Obtained From: passing electric charge through melted lithium chloride

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Zinc

Symbol: Zn Atomic Number: 30 Atomic Mass: 65.39 Melting Point: 419.58 °C Number of Protons/Electrons: 30 Number of Neutrons: 35 Classification: Transition MetalColor: bluishDate of Discovery: 1746 Discoverer: Andreas Marggraf Name Origin: From the German word zin (meaning tin) Uses: metal coating, rust protection, brass, bronze, nickel Obtained From: zinc blende, calamine

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Iron

Symbol: Fe Atomic Number: 26 Atomic Mass: 55.845 Melting Point: 1535.0 °C Number of Protons/Electrons: 26 Number of Neutrons: 30 Classification: Transition MetalColor: Silvery Date of Discovery: Known to the ancients Discoverer: Unknown Name Origin: Latin Symbol Origin: From the Latin word ferrum (iron) Uses: steel, hemoglobin (carries oxygen in blood) Obtained From: iron ores

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Tin

Symbol: Sn Atomic Number: 50 Atomic Mass: 118.71Melting Point: 231.9 °C Number of Protons/Electrons: 50 Number of Neutrons: 69 Classification: Other MetalsColor: white Date of Discovery: Known to the ancients Discoverer: Unknown Name Origin: Latin Symbol Origin: From the Latin word stannum (tin) Uses: coating for steel cans Obtained From: ore cassiterite

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Silver

Symbol: Ag Atomic Number: 47 Atomic Mass: 107.8682 Melting Point: 961.93 °C Number of Protons/Electrons: 47 Number of Neutrons: 61 Classification: Transition MetalColor: silver Date of Discovery: Known to the ancients Discoverer: Unknown Name Origin: From the Old English word seolfor (silver) Symbol Origin: From the Latin word argentum (silver) Uses: jewelry, photography, electrical conductor Obtained From: ores (argentite, light ruby silver, dark ruby silver, brittle silver)

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Gold

Symbol: Au Atomic Number: 79 Atomic Mass: 196.96655 Melting Point: 1064.43 °C Number of Protons/Electrons: 79 Number of Neutrons: 118 Classification: Transition MetalColor: Gold Date of Discovery: circa 3000 BC Discoverer: Unknown Name Origin: From the Old English word geolo (yellow) Symbol Origin: From the Latin word aurum (gold) Uses: electronics, jewelry, coins Obtained From: crust of the earth, copper ores

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Platinum

Symbol: Pt Atomic Number: 78 Atomic Mass: 195.078 Melting Point: 1772.0 °C Number of Protons/Electrons: 78 Number of Neutrons: 117 Classification: Transition MetalColor: silverish

Date of Discovery: 1735 Discoverer: Julius Scaliger Name Origin: From the Spanish word platina (little silver) Uses: jewelry, containers, catalyst Obtained From: platinum ores

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Conclusion

To conclude, the relationship between the discovery date and the reactivity series is as follows: “The further down the metal in the reactivity series (the less reactive the metal) the longer ago it was discovered.” In general, the less reactive a metal, the earlier it will have been isolated and identified.My Project is linked to Human Ingenuity because it shows the date of discovery and the person who discovered it.

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Periodic Table Of Elements Movie

This movie is about the elements in the periodic table. The nine metals that I have researched are all represented in the periodic table in there atomic forms, the most reactive of which are in the first group.

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Bibliography

http://en.wikipedia.org/wiki/Potassium http://en.wikipedia.org/wiki/Sodium http://chemicalelements.com/ http://www.google.com.qa/imghp?hl=en&tab=wi -

used for pictures http://en.wikipedia.org/wiki/Iron http://www.youtube.com/watch?v=1PSzSTilu_s