Metals By Arshia Jain 8C Science Mrs. Arora AOI: 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 Most Reactive Potassium Sodium Lithium Calcium Magnesium Aluminum Zinc Iron Tin Lead Copper Silver Gold Platinum Least Reactive

Metals Timeline Metals Discovery Date Gold circa 3000 BC Iron Known to the ancients Tin Silver Platinum 1735 Zinc 1746 Potassium 1807 Sodium Lithium 1817

Potassium Symbol: K Atomic Number: 19 Atomic Mass: 39 Melting 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 Metal Color: 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 Metal Color: 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 Metal Color: 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 Metal Color: 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: 118.71 Melting Point: 231.9 °C Number of Protons/Electrons: 50 Number of Neutrons: 69 Classification: Other Metals Color: 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 Metal Color: 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 Metal Color: 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 Metal Color: 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