Metals

By Arshia Jain 8CScience

Mrs. AroraAOI: Human Ingenuity

My Project is linked to Human Ingenuity because it shows the date of discovery and the person who discovered it.

Reactivity Series

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

Most Reactive

Least Reactive

Metals Timeline

Metals Discovery Date

Gold circa 3000 BC

Iron Known to the ancients

Tin Known to the ancients

Silver Known to the ancients

Platinum 1735

Zinc 1746

Potassium 1807

Sodium 1807

Lithium 1817

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)

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

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

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: bluish

Date 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

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

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

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)

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

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

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.

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.

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