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Jan 1, 1250
Arsenic was discovered
Arsenic was discovered by Albertus Magnus (DE) in 1250 -
Jan 1, 1529
Georigius Agricola described the use of fluorspar as a flux in 1529
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Aug 19, 1530
Scientists find strange disease for miners.
Miners were dying relatively young as a result of exposure to radon. The Swiss physician Paracelsus identified their cause of death as a "wasting disease," and German scientist Georg Agricola suggested that mines be ventilated to protect miners. -
Carbon Monoxide was discovered
In the 1700s CO was discovered. The discoverer of CO is controversial. -
Cobalt officially discovered
Cobalt is officially discovered -
Experiments carried out on fluorspar
Several chemists carried out experiments on fluorspar in the early 1800s including Gay Lussac, Louis Jacques Thenard, Humphry Davy, Carl Wilhelm Scheele and Joseph Priestley. -
Potassium Metal Isolated
Potassium metal was the first metal to be isolated by electrolysis. -
French scientist Andre-Marie Ampere proposed that fluoric acid was a compound of hydrogen with a new element
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New element fluorine was announced
Humphrey Davy announced the discovery of the new element fluorine. -
Lithium was Discovered
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Contents of nickel discovered in whit copper
Contenets of nickel discovered in white copper -
Potassium + Plant Life Linked
Potassium is discovered to be absent in most soil, increasing sales of potassium salts. -
Cesium is discovered
In 1860, nonradioactive cesium was discovered by Gustav Kirchhoff and Robert Bunsen. -
Fluorine isolated
Ferdinand Frederick Henri Moissan, a French chemist, finally isolated the element in 1866. -
Evidence of helium is discovered
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George Gore passes an electric current through liquid hydrofluoric acid
British chemist George Gore passed an electric current through liquid HF but found that the gas which was liberated reacted violently with his apparatus -
Lung Disease caused by unknown gas
A study of miners in the Ore Mountains shows that the lung disease killing miners is cancer, and in some mines it kills 75% of the miners. The "gas" is later though to have been radon emanation. -
first large scale producer of nickel in Norway
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Indroduction of nickel in steel production
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Belgian scientist Frédéric Swarts pioneered synthesis of Chlorofluorocarbon (CFC's)
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Argon Discovered
Argon was discovered in 1894 by Sir William Ramsay. Its main use is lighting and it is obtained from air. -
Radon is Discovered
No one knows the exact date of witch radon was discovered. But it was between the years 1898 to 1900 by Friedrich Ernest Dorn. -
Period: to
Year and Date
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Helium is extracted in America
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Lead Paint poisons children
Child lead poisoning linked to lead-based paints kills many children -
First Isolation of Radon
The first isolation of Radon was by William Ramsay and Robert Whytlaw-Gray in 1910. The picture is the apparatus they used to isolate it. -
G.N Lewis began to test out Lithium.
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The American Cancer Society Founded
The American Cancer Society has helped discovered and cure many cancers of the elements of the periodic table. -
Radon is officially named
Originally named niton after the Latin word for nitens, It was named radon in 1923. -
Thomas Midgley Jr improved synthesis of CFC's and led effort to use them as refrigerants
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Uranium fIrst discovered in Canada
Uranium was fIrst discovered in Canada in 1930. -
Method of Stripping Rhodium Plating Invented
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Canadian Cancer Society Founded
In addition to the American Cancer Society, The Canadian Cancer Society has helped discover and cure many cancers envolved with elements of the periodic table, -
Cesium-137 is discovered
In the late 1930s, radioactive cesium-137 was discovered by Glenn T. Seaborg and Margaret Melhase. -
Splitting Uranium Atom
Otto Hahn, Lise Meitner, and Frits Strassmann discovered that the Uranium atom when bombarded by neutrons, actually split -
Florine is used WWII
In World War 2, at first there was no use for fluorine. But it soon gained recognitation in atomic bombs. -
Until the 1940s, inorganic arsenic was used as...
Until the 1940s, inorganic arsenic was used as therapeutic agents in the treatment of various diseases, such as leukemia, psoriasis and chronic bronchial asthma -
Plutonium Was Discovered
Plutonium was discovered in December 1940 by Glenn T. Seaborg , J. W. Kennedy, E. M. McMillan, A. C. Wah -
Plutonium is first discoverd
Glenn Seaborg and a team at the University of California fused uranium-238 with hydrogen atoms and plutonium was born. -
Helium is used in WWII
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United Kingdom Test for Oxygen Toxicity in Divers
In 1942 - 1943, the United Kingdom government created tests of oxygen toxicity in divers. -
During war all nickel contant was removed form the us and candain coins
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Private mining for uranium was ban
In 1943 private mining for uranium was ban so it could be used in atomic weapons for world war 2. -
Plutonium bombing
Americans have gathered enough plutonium in order to make 3 atomic bombs. One was the bomb that hit Nagasaki, Japan -
Private mining of uranium was unbanned
In1947 private mining of uranium was unbanned. -
The world’s first nuclear power plant was commissioned
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Argon Symbol Changes
The symbol of Argon changes from A to Ar. -
Plutonium fire occurred
The accident resulted in the contamination of Building 771 and the release of plutonium into the atmosphere, and caused US $818,600 in damage. -
One of the first nuclear disasters
One of the first nuclear disasters occurred in the Windscale nuclear reactor. This large disaster caused a lot of long term damage to the environment. -
Cecil Kelley dies from Plutonium radiation
a mistake in the Los Alamos plutonium prossesing plant caused Cecil Kelley to die from radiation. -
First Plutonium powered satellite
Transit 4A is launched with a plutonium battery. -
The sale of uranium in Canada was limited
The sale of uranium in Canada was limited for peaceful purposes only. -
Canada uses 99.9% of nickel in their coins
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Williams-Steiger Occupational Safety and Health Act was made
There was a Williams-Steiger Occupational Safety and Health Act made in 1970 -
Lithium Non-recharable batteries became avalible to the public.
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Carbon Monoside is found to contribute to climate change
Human activities have been found to cause climate change. Carbon Monoxide is emitted mostly because of human activities and it causes climate change. -
James Lovelock measured CFC-11 in the Arctic and Antarctic, concluding that they were not hazardous to the environment.
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Cobalt first utilized
Cobalt is first used as a pigment in China -
Bromofluoronalkanes were in common use on aircrafts, ships, and large vehicles, and concern about the impacts of CFC's were beggining to arise.
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Radon source discovered
Scientist discover that the main source of indoor radon is air in the ground, drawn into buildings by underpressure indoors. -
Japan research team created a rechargeable lithium battery prototype.
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Largest nuclear disaster
The largest nuclear disaster in Chernobyl killed many people and caused huge long term damage -
Cesium chloride causes the death of four people
Cesium chloride was removed from an abandoned hospital by people who didn't know what it was and distributed to others. -
Cold War taxes
With the cold war ending the US goverment put taxes on nuclear weapon making so two plutonium plants are dismanteled. This seems like an end to plutonium nuclear weapons. -
12 European community nations agreed to ban production of all CFCs by the end of the century.
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Formaldehyde
Employee pulls 5 gallon container of formaldehyde and methanol solution. It spilt on him from head to toe. He was burned badly and was hospitalized. -
Carbon Monoxide Emissions Start To Lower
The emissions start to significantly lower because of improvements in motor vehicle emissions. -
Sony commercilazied the Lithium Ion Battery
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Argon Plasma Coagulation Invention
Argon Plasma Coagulation Invention LinkThis device uses Argon gas to treat gastric cancer. -
Lead is eliminated from gas.
Thousands and tons of lead has been removed from the air, and blood levels of lead in our children are down 70 percent -
Cesium-137 is accidentally burned, causing a radioactive cloud
Cesium-137 is accidentally burned, causing a radioactive cloud that was detected in France, Italy, Switzerland, Germany and Austria. -
U.S' consumption of helium is 15 mill. kg/year
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Argon Fluorohydride Discovered
Argon Fluorohydride was discovered in 2000 by researchers at the University of Helsinki. It is a compound of argon with fluorine and hydrogen. -
An estimated 5 791 kilitons of CFC's were found in products such as air conditioners, aerosol cans and refrigerators.
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Arsenicthe US Environmental Protection Agency
In 2003 the use of this compound was banned by the US Environmental Protection Agency -
Formaldehyde
Ruptue/burst of dangerous chemicals on a railway in the states, formaldehyde was involved. It was a natural event. -
Lead is listed as the most important neurotoxin for children
WHO/ Europe include lead on the list of Hazardous Chemicals: main risk for children's health as the most important neurotoxin for children -
Formaldehyde
Burns and explosion were caused by formaldehyde on a man working as a "Prepreg- Lead". -
Sale of helium becomes privitized
The American government was in such a huge debt (1.4 BILLION dollars!) that they passed a "Privatize the sale of helium in the United States" act. -
Argon Discovered on Titan
Argon is discovered on Titan, the largest moon of saturn. -
Helium prices double
Due to the high demand for helium in the medical world for the cooling of huge magnets which are what essentially powers MRI machines, paired with the ridiculously huge helium overusage in North America and a growing demand for the substance in Europe, helium supplies are running out. -
Argon Gas Leak Kills 3 Florida Dockworkers
A buildup of argon gas inside a cargo ship killed three dockworkers. The three men suffocated in an area where the gas had pushed the oxygen out of the air. For more information, click here -
Uranium poisoning
in punjab there was uranium poisoning to the towns people. -
Potentially deadly cesium is lost in China
Cesium- 137 encased in lead was lost when workers demolished an old factory. -
Most recent nuclear disaster
One of the most recent nuclear disasters occurred in Fukushima, Japan. A tsunami caused this nuclear disaster. No deaths or radiation sicknesses were caused by this disaster. -
Japan Finds Plutonium One Mile Away From Fukushima
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Carbon Monoxide levels are lower
The levels of Carbon Monoxide in the USA have decreased by 83% since the 1980s. -
Formaldehyde
Formaldehyde is spilt into North Bay's drinking water through a car crash involving a truck that was carrying formaldehyde. -
Lithium-ion battery caught fire on an empty 787 plane
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Plutonium Leaks In Washington
Plutonium leak in Washington poses 'long-term threat' -
Five Killed by Argon Gas at Steel Plant
Five people sufficated to death at a steel plant after argon gas leaked from a furnace. For more information, click here -
Plutonium release at U.S. nuclear facility
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Lead paint is still sold
Lead paint is still currently being sld in many developing countries, making more and more children ill. -
Formaldehyde
Formaldehyde is spilt in car crash causing the content to spill all over the road. Chemical spill caused eye irritation and breathing difficulty to those who were involved. -
Carbon Monoxide is turned into useful chemicals
Scientists were able to convert carbon dioxide into carbon monoxide which can be turned into helpful chemicals. The chemicals can then be turned into synthetic fumes which can decrease greenhouse gas emissions. -
Helium is expected to run out
Unless another source of helium can be found, there will be almost no helium available by 2018, perhaps 2020 if we're lucky. -
Lower Carbon Monoxide Levels
The levels of CO in the atmosphere are projected to decrease even more. -
Pu-238 shortage begins
by this time if the problem is not handeled. by this time we could have a shortage on plutonium-238 and it could run out. this could slow space exploration a lot -
10 people die after uranium poisoning
10 people die after uranium poisoned their drinking water. -
All CFCs are replaced by hydrochlorofluorocarbons (HCFC).
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Lead is less exposed
Lead is not exposed to humans without safety equipement on, and new medicines are invented to help cure humans diagnosed with lead poisoning or help prevent humans from getting diagonsed with it.
