1. By: Jessica

2. WHAT IT LOOKS LIKE? Chlorine is a pale yellow-green gas. It’s a colored liquid, in order to see the yellow color, you have to have a light background.

3. USES Chlorine is used in many everyday products. It is used for disinfecting drinking water. In nature, chlorine is only found in the combined state. Chlorine is used to make computer hardware and automotive parts. Chlorine was first used in drinking water in the 19 th century to control the spread of water-born diseases such as cholera and typhoid fever. Chlorine is used to disinfect swimming pool water. Adding small amounts of chlorine to drinking water supplies has saved millions of people’s lives. Chlorine is also used for paper products, food, paints, plastic and many other things.

4. HISTORY Elemental chlorine was first prepared and studied in 1774 by Swedish chemist Carl Wilhelm Scheele, and, so he is credited for its discovery. He named this new element as chlorine, from the Greek word χλωρος (chlōros), meaning green-yellow. Since chlorine combines directly with nearly every element, chlorine is never found free in nature. Carl Wilhelm Scheele

5. Facts Chlorinated water kills bacteria because it breaks down into chlorine and oxygen. Both the chlorine and the oxygen need more electrons and join easily with other atoms. Chlorine also mixes easily with water, forming an acid molecule made of hydrogen, oxygen, and chlorine atoms. This is the main ingredient of bleach, and we use it to kill bacteria in water, to make it safe to swim in and to drink. Molecule

6. GLOSSARY χλωρος greenish -yellow Disinfect - Clean with a disinfectant so as to destroy bacteria. Chemist - An expert in chemistry; a person engaged in chemical research or experiments

7. fUn fAcTs Chlorine's Name in Other Languages Latin: Chlorum Czech: Chlor Croatian: Klor French: Chlore German: Chlor - r Italian: Cloro Norwegian: Klor Portuguese: Clóro Russian: Хлор Spanish: Cloro Swedish: Klor

8. WEBSITES http://www.radiochemi stry.org/period ictable/elements/17.ht ml http://www.chemicool.c om/elements/chlorine.h tml http://www.chemicalele ments.com/elements/cl.html http://chemistry.about. com/od/elementfacts/a/ chlorine.htm