What is chlorine and how does it have an impact on humans’ health and the environment?
Chlorine is a chemical element that was discovered by Carl Wilhelm Scheele in 1774. Its symbol is Cl and its atomic number is 17. Chlorine has the physical form of a diatomic greenish-yellow gas at room temperature and atmospheric pressure. 1. 2. Indeed, its name is derived from the Greek word ‘chloros’, meaning ‘yellow-green’. 3. In the Periodic Table of Elements, Chlorine is found in the P-block, in group 17 and period 3. Chlorine is a non-metal, the second-lightest of the halogen family, which consists of salt-forming elements. 1. 2. Chlorine is 2.5 times as heavy as air. It has a pungent, suffocating odor and it is poisonous. 1. 4. Chlorine is highly reactive and, due to its capability to combine with nearly any other element, in nature it is only found as part of compounds, the most common being sodium chloride. 1. 2. 3.…
Chlorine is the second to lightest member of the halogen elements. It is in Group 17 (Group VIIA) and period 3 of the periodic table. The element symbol for Chlorine is Cl. Chlorine is a greenish yellow gas that is corrosive, toxic and can be irritating to the eyes and respiratory system.
Chlorine is a nonmetal that has the atomic mass of 35.45 amu. It has a melting point of -100.98 degrees Celsius and a boing point of -34.6 degrees Celsius. However, at room temperature it is a gas. Chlorine…
At the beginning of the 1900s chlorine started to be used as a disinfectant in water. Water had to be chlorinated because of waterborne pathogens which would then go and cause deadly diseases which flourished in our pipes and water ways and infected millions of people. But ever since the disinfection of water the most of these diseases have been eliminated in first world countries but is still a big problem in 3rd world problems. (Calomiris, 1998)
Chlorine is the most used disinfectant around…
STAGE 2 Chemistry
Assessment Type 1: investigation Folio
Student Response: Issues Investigation
Chlorine is considered to be the single largest contributor to safe drinking water in the history of public health. In 1902 the first chlorine disinfection system was installed in Belgium. By the 1920’s nearly the whole world started using the process. Due to this disinfection process many disease-causing microorganisms were abolished. According to Life Magazine (1997) “The…
The element chlorine is located in the 7th group in the periodic table it is the symbol for CI. Chlorine is a chemical element it has a atomic mass of 35. Chlorine has 17 protons, 18 neutrons, and 17 electrons. The electron configuration for chlorine is 3s2-3p5. Chlorine has a boiling point of 3.16, and is family with halogen.
Chlorine was discovered in 1774 by Carl Wilhelm Scheele. He obtained it through the reaction of the mineral pyrolusite manganese dioxide with hydrochloric acid.…
Chlorine is a chemical added to swimming pools to keep the water free of bacteria and algae. Chlorine levels in swimming pools vary based on how much chlorine has already been used to remove bacteria and how much sunlight has broken down the chlorine molecules. This means that pool owners spend a lot of time testing and adjusting the levels of chlorine in their pools. To reduce the amount of time spent on pool maintenance, pool chemical manufacturer's created chlorine tablets. These tablets are…
Chlorine is a naturally occurring substance. Chlorine has proven to be useful in the sanitation of water and its viability as a disinfectant. However, its manipulation and use in forming artificial chemical products has had devastating effects on the environment. Chlorine plays a major role in environmental problems such as depletion of the ozone layer, global warming and acid rain. It is most common in salt, but it is also prominent as organochlorines in solvents, pesticides, plastics,…
I am against the use of chloramines in Stockton’s water. Did you know that it can cause rashes after showering in a small percentage of people? (http://www.foodreference.com/html/a413-chlorinewater.html, Article 3, Paragraph 4)
What if that small percentage is you, everyone else is just fine and you are suffering from this rash. It’s also possible for lead from pipes to dissolve into the water, which can cause even more problems. (http://www.foodreference.com/html/a413-chlorinewater.html,…
elements using chlorine, bromine and iodine.
The higher on the periodic table the more reactive the element will be.
0.2M potassium chloride solution
0.2M potassium bromide solution
0.2M potassium iodide solution
The purpose of this experiment was to determine the percent of chlorine in an unknown soluble salt through using gravimetric techniques. The unknown salt was dissolved in water and the chloride ions were precipitated using silver nitrate which produced silver chloride. The silver chloride was then separated by filtration techniques and through this the amount of chlorine in the original salt was able to be calculated. It is expected that the chlorine percent will be around 55.95%…