IYC2011 - Chlorine Traditional Cache
Hidden : 4/11/2010
Difficulty:
1.5 out of 5
Terrain:
2 out of 5

Size: Size: small (small)

Join now to view geocache location details. It's free!

Watch

How Geocaching Works
Looking for a different adventure?

Related Web Page

Please note Use of geocaching.com services is subject to the terms and conditions in our disclaimer.

Geocache Description:

This is a cache in the IYC2011-series that is preparing for the
International Year of Chemistry in 2011. They will hopefully
increase chemistry knowledge as well as provide for good cache
experiences.

Each cache in the IYC2011-series contains a clue (on the log
sheet) to find the final IYC2011-cache to be released on
1/1/2011.

Chlorine



Chlorine is the chemical element with atomic number 17, represented by the symbol Cl.
It is a halogen, found in the periodic table in group 17. As the chloride ion, which is part of common salt and other compounds, it is abundant in nature and necessary to most forms of life, including humans. In its elemental form (Cl2 or "dichlorine") under standard conditions, chlorine is a powerful oxidant and is used in bleaching and disinfectants, as well as an essential reagent in the chemical industry. As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary. In the upper atmosphere, chlorine-containing molecules such as chlorofluorocarbons (CFC's) have been implicated in the destruction of the ozone layer.



At standard temperature and pressure, two chlorine atoms form the diatomic molecule Cl2. This is a pale yellow-green gas that has its distinctive strong smell, the smell of bleach. The bonding between the two atoms is relatively weak (only of 242.580 ±0.004 kJ/mol) which makes the Cl2 molecule highly reactive.
Along with fluorine, bromine, iodine and astatine, chlorine is a member of the halogen series that forms the group 17 of the periodic table—the most reactive group of elements. It combines readily with nearly all elements.
Compounds with oxygen, nitrogen, xenon, and krypton are known, but do not form by direct reaction of the elements. Chlorine, though very reactive, is not as extremely reactive as fluorine. Pure chlorine gas does, however, support combustion of organic compounds such as hydrocarbons, although the carbon component tends to burn incompletely, with much of it remaining as soot.



Chlorine is a member of the salt-forming halogen series and is extracted from chlorides through oxidation often by electrolysis. With metals, it forms salts called chlorides. As the chloride ion, Cl-, it is also the most abundant dissolved ion in ocean water.

Read more about Chlorine here or here.


Cache contents


- Logsheet
- Pencil
- FTF-certificate


This cache will be maintained by myself and family in the immediate area on a monthly basis.

Additional Hints (Decrypt)

Oruvaq fgbar

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)


Advertising with Us