1. 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.

2. 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

3. 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

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

5. Sodium
Symbol: Na Atomic Number: 11 Atomic Mass: Melting Point: °C Number of Protons/Electrons: 11 Number of Neutrons: 12 Classification: Alkali Metal Color: silvery
Date of Discovery: 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

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

7. Zinc
Symbol: Zn Atomic Number: 30 Atomic Mass: Melting Point: °C Number of Protons/Electrons: 30 Number of Neutrons: 35 Classification: Transition Metal Color: bluish
Date of Discovery: 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

8. Iron
Symbol: Fe Atomic Number: 26 Atomic Mass: Melting Point: °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

9. Tin
Symbol: Sn Atomic Number: 50 Atomic Mass: Melting Point: °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

10. Silver
Symbol: Ag Atomic Number: 47 Atomic Mass: Melting Point: °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)

11. Gold
Symbol: Au Atomic Number: 79 Atomic Mass: Melting Point: °C Number of Protons/Electrons: 79 Number of Neutrons: 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

12. Platinum
Symbol: Pt Atomic Number: 78 Atomic Mass: Melting Point: °C Number of Protons/Electrons: 78 Number of Neutrons: Classification: Transition Metal Color: silverish
Date of Discovery: Discoverer: Julius Scaliger Name Origin: From the Spanish word platina (little silver) Uses: jewelry, containers, catalyst Obtained From: platinum ores

13. 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.

14. 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.

15. Bibliography http://en.wikipedia.org/wiki/Potassium
- used for pictures