Does a connection or relationship exist between the reactivity of a metal and when it was discovered? Shaikha Fakhroo 8B.

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Presentation transcript:

Does a connection or relationship exist between the reactivity of a metal and when it was discovered? Shaikha Fakhroo 8B

Periodic table Most elements are metals. There is a key showing what each area is.

Metals that were discovered The first two metals that were discovered are gold and copper. Gold was used since 6000BC. Copper was used since 4200BC.

Metals in common There are 12 metals in common: Gold Silver Copper Lead Mercury Iron Tin Platinum Antimony Bismuth Zinc Arsenic

The most to least reactive metals: Potassium K Sodium Na Lithium Li Calcium Ca Magnesium Mg Zinc Zn Iron Fe Copper Cu

There are seven metals that are known as ‘Metals of Antiquity’. They are: (1) Gold (ca) 6000BC (2) Copper, (ca) 4200BC (3) Silver, (ca) 4000BC (4) Lead, (ca) 3500BC (5) Tin, (ca) 1750BC (6) Iron (ca) 1500BC (7) Mercury, (ca) 750BC

Metals discovered in 18 th century

Metals discovered in the 19 th century 1801 Niobium 1802 Tantalum 1803 Iridium, Palladium, Rhodium 1807 Potassium, Sodium 1808 Boron, Barium, Calcium, Magnesium, Strontium 1814 Cerium 1817 Lithium, Cadmium, Selenium 1823 Silicon 1827 Aluminum 1828 Thorium 1830 Vanadium 1839 Lanthanum 1843 Erbium, Terbium 1844 Ruthenium 1860 Cesium, Rubidium 1861 Thallium 1863 Indium 1875 Gallium Holmium, Thulium, Scandium, Samarium, Gadalinium, Praseodynium, Neodynium, Dysprosium 1886 Germanium 1898 Polonium, Radium 1899 Actinium

Metals discovered in the 20 th century 1901 Europium 1907 Lutetium 1917 Protactinium 1923 Hafnium 1924 Rhenium 1937 Technetium 1939 Francium 1945 Promethium Transuranium elements. Neptunium Plutonium Curium Americum Berkelium Californium Ein steinium Fermium Mendelevium Nobelium Lawrencium

Conclusion I say that there is a connection between when it was discovered and how reactive it is. The earlier the metal is discovered the less reactive it is. That is because the metals that react more are harder to discover and there were not any chemical scientists before.

Bibliography "Periodic Table." Web. 22 Oct "All Metals In Order From Most Reactive To Least Reactive, Why?" Ask Questions, Get Free Answers - Blurtit. Web. 22 Oct "Metals in Science." Short History of Metals. Web. 22 Oct "Copper." Picture of Copper. Web. 22 Oct "Gold." Gold. Web. 22 Oct "Potassium." Potassium on Periodic Table. Web. 22 Oct "Lithium." Periodic Table Lithium. Web. 22 Oct