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Halogens

lab1

Subject: 
Chemistry
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Chemistry
Iodine
matter
Dietary minerals
Iodides
Chemical elements
Halogens
Tincture of iodine
Triiodide

15 Southside Seaweed Seaport Chemists are often depicted in movies or in books as eccentric and absent-minded p:ofessors. ln reality chemists are very in touch with the needs of society and are more practical tnan you nay think. Chemists often isolate substances found in nature or create new substances that benefil our heai:h. This activity is a case in point. You will be isolating an iodide salt that will be used to prepare a tinctlrre of lodine. Sold as an over-the-counter drug in your local pharmacy, iqQlne is used as an antiseptic on cL(s and scrapes of the skin. lodine has also been used to sanitize swimming pools and medical instruments pur,fy drinking water and is used in the treatment of goiter (swelling of the thyroid). I hope that this acti\.i}, r,rill convince many of

Chemistry SL design IA

Subject: 
Chemistry
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Chemistry
Food and drink
matter
Iodine
Oxidizing agents
Halogens
Starch
Beaker
Thermometer
Technology
Chemistry SL design IA

What Effect does Temperature on the Rate of Reaction? Introduction Temperature is nothing more than the average kinetic energy of a mass of atoms. This being said, the less kinetic energy present, the fewer collisions between the conglomeration of atoms, and thus the slower a reaction will progress (chemguide.co.uk). This idea is powered by the collision theory, allowing us to accurately hypothe- size what will happen based on the temperature of a solution. As we approach absolute zero (0o K), the rate of reaction asymptotically approaches zero, never reaching it ,since we can never thoeretically reach absolute zero, but getting infintesimally closer by a mesurable degree.
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