English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Like when and where it was discovered, and who discovered it, and what type of element it is, from which family it came from, what period, and its isotopes and uses.. Its for a project for science. =] and anythiing else that is useful

2007-12-18 06:00:03 · 7 answers · asked by mboylover294 1 in Science & Mathematics Chemistry

7 answers

Argon was suspected to be present in air by Henry Cavendish in 1785 but was not discovered until 1894 by Lord Rayleigh and Sir William Ramsay in an experiment in which they removed all of the oxygen and nitrogen from a sample of air. Argon was also encountered in 1882 through independent research of H.F. Newall and W.N. Hartley. Each observed new lines in the color spectrum of air but were unable to identify the element responsible for the lines. Argon became the first member of the noble gases to be discovered. The symbol for argon is now Ar, but up until 1957 it was A.

Argon is a chemical element designated by the symbol Ar. Argon has atomic number 18 and is the third element in group 8 of the periodic table (noble gases). Argon is present in the Earth's atmosphere at slightly less than 1%, making it the most common noble gas on Earth. Its full outer shell makes argon stable and resistant to bonding with other elements. Its triple point temperature of 83.8058 K (Kelvin) is a defining fixed point in the International Temperature Scale of 1990.

Hope this helps!

2007-12-19 02:10:39 · answer #1 · answered by witchello@btinternet.com 2 · 1 0

You need the 1904 Nobel prizes listed below

http://nobelprize.org/nobel_prizes/chemistry/laureates/1904/index.html
http://nobelprize.org/nobel_prizes/physics/laureates/1904/index.html

Also, look into the density of nitrogen from two sources: (1) nitrogen isolated from an experiment and (2) nitrogen isolated from the atmosphere. The density of N2 from the air is slightly higher than from experiment. This is due to the presence of the inert gases still being present in the N2 isolated from the air.

Also, look up William Cavendish (late 1600's, I think) and his work on the atmosphere. He removed all components from the air, but was left with a small amount (always approx 1/120 of his starting volume) he could never react. We now know the inert gases (argon being the largest component) made up that small bubble of unreacted gas.

Best wishes on your project.

2007-12-18 14:09:08 · answer #2 · answered by ChemTeam 7 · 0 0

Look it up in Wikipedia.

Not that much to know, except for the fascinating story of how it was discovered by Ramsay and Raleigh; look in any book on the history of chemistry. Shows the importance of accurate measurements. Also that the reason it is so abundant on Earth compared with other noble gases is that it is formed by radioactive decay of 40K, giving it uses in dating.

2007-12-18 14:05:21 · answer #3 · answered by Facts Matter 7 · 0 0

Check out webelements.com.
http://www.webelements.com/webelements/elements/text/Ar/key.html

2007-12-18 14:03:28 · answer #4 · answered by Dr.F 3 · 0 0

Have you tried this (whoosh sound here):

http://en.wikipedia.org/wiki/Argon

Magic ...

===
OK I googled it.

OK - Here's a real Argon magic trick

http://video.yahoo.com/video/play?vid=1034256&fr=


Good Luck.

2007-12-18 14:02:18 · answer #5 · answered by Lover not a Fighter 7 · 0 0

All I know is that the dual paned windows we bought were filled with it to help with insulation.

2007-12-18 14:02:51 · answer #6 · answered by The Cat 7 · 0 0

look up Tesla

2007-12-18 14:02:15 · answer #7 · answered by Execusuite 3 · 0 0

fedest.com, questions and answers