Period Four: 19. One calcium compound, lime (calcium oxide, CaO) was extensively used by the ancients. Calcium was first isolated by Sir Humphry Davy in 1808 in London. Chromium: Discovered in 1798 by Nicholas Louis Vauquelin 25. (3) Literature dating back to … Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water. How was calcium discovered? He was trying to make a substance that we now call calcium amalgamate by mixing lime (also called calcium oxide - CaO) with mercuric oxide (HgO) and putting an electric current across it - a process called 'electrolysis'. Calcium with oxygen forms lime, which is used extensively. Hello, I am Justin Maki and I am the engineering camera lead for the Mars Science Laboratory mission and a member of the MSL Science Camera Team and this is your Curiosity Rover Report. The silvery, rather soft, lightweight metal itself was first isolated (1808) by Sir Humphry Davy after distilling mercury from an amalgam formed by electrolyzing a mixture of lime and mercuric oxide. Swedish chemist Berzelius and Swedish court physician … In addition to occurrence in lime (calcium carbonate), calcium is found in the minerals gypsum (calcium sulfate) and fluorite (calcium fluoride). A few other scientists, Magnus Pontin … Calcium has been known since the first century CE, when the ancient Romans were known to make lime from calcium oxide. Calcium ion (Ca2+) is a versatile signaling transducer in all eukaryotic organisms. Calcium is important nutrient for the human body. Vanadium: Discovered in 1801 by Andrés Manuel del Rio 24. Potassium: Discovered in 1807 by Humphry Davy 20. It was discovered in 1787 by Antoine Lavoisier and was isolated in pure form in 1808. Manganese: Discovered … Limestone which is also called calcium carbonate was called calx by the Romans. Calcium: Discovered in 1808 by Humphry Davy 21. Calcium Discovery . Calcium is an alkaline earth metal and has been known since prehistoric times. 01.18.13 › View Now . Metallic calcium was first isolated by Sir Humphry Davy in 1808 through the electrolysis of a mixture of lime (CaO) and mercuric oxide (HgO). In a lecture to the Royal Society in June 1808, Davy described his experiments that year, which produced tiny amounts of metal, at best. Curiosity Finds Calcium-Rich Deposits. He could not find any way to produce more calcium metal until a letter from Jöns Berzelius in Stockholm pointed him in the right direction. In plants, intracellular changes in free Ca2+ levels act as regula… Maria - The element Calcium was discovered in 1808 in England by a scientist named Sir Humphrey Davy. Scandium: Discovered in 1879 by Lars Frederik Nelson 22. Calcium is used in alloys with other metals and in purifying zirconium, thorium, uranium and several of the rare-earth metals. Titanium: Discovered in 1791 by William Gregor 23. Calcium. Calcium (Latin word calcis meaning "lime") was known as early as the first century when the Ancient Romans prepared lime as calcium oxide. The compounds that are in calcium were used long before the element itself was actually discovered. It can purify molten metals by removing carbon, sulfur and oxygen from the metals. The Romans heated calx, driving off carbon dioxide to leave calcium oxide. Discovery Date: 1808 Discoverer: Sir Humphrey Davy [England] Name: Calcium derives its name from the Latin 'calcis' which was the word for lime (calcium oxide, CaO) and limestone (calcium carbonate, CaCO 3) History: The Romans prepared lime in the first century, but the metal was not discovered until 1808. In 1808, Cornish chemist and inventor Sir Humphry Davy was the first person to successfully isolate calcium.