The Element: Chlorine General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures. Chlorine is second in reactivity only to fluorine among the halogen elements. Chlorine is a nonmetal. It is estimated that 0.045% of the earth’s crust and 1.9% of sea water are chlorine. Chlorine
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Chlorine Zachary Grindle Chemistry 1301 Professor Bott June 24‚ 2010 Chlorine has an atomic mass of 35.453‚ atomic number 17‚ is a member of the halogen family (VIIA)‚ and its symbol is “Cl”. Chlorine contains 17 protons and 18 neutrons in is nucleus. There are two isotopes for chlorine as well; Cl-35 and Cl-37. Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Sheele. Sheele came upon chlorine when he put a few drops of hydrochloric acid (HCl)‚ then known as muriatic acid
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Determination of the concentration of chlorine ions Aim: To compare the concentration of chloride ions in pool and tap water respectively. Background: Tap water contains a variety of dissolved ions such as Ca2+‚ Mg2+‚ Na+‚ HCO3- and Cl-. In this experiment we will determine the concentration of the Cl- ions‚ and comparing it to the concentration found in a sample of pool water. The method used is the standard one for determining the concentration of chloride ions: titration with
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precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark ) (a) Sandmeyer’ reaction (b) Fittig reaction (c) Wurtz reaction (d) Williamson’s synthesis (Q.3) Substitution of chlorine takes place readily at higher temperature in : ( 1 mark ) (a) CH3CH=CH2 (b) H2C=CH2 (c) HC C (d) None of the above (Q.4) (CH3)3CMgBr on reaction with D2O gives: ( 1 mark ) (a) (CH3)3CD (b) (CH3)3COD (c) (CD3)3CD (d) (CD3)3OD (Q.5) The silver
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to urgent coughs and gasps for air. I researched the issue extensively and utilized the osteopathic medicine students‚ athletic trainers‚ databases and library resources to collect information. The insurmountable research proved my hypothesis that chlorine was causing the worsening of asthma symptoms throughout the year.
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ractice Problem #1: Oxygen gas can be produced by decomposing potassium chlorate using the reaction below. If 138.6 g of KClO3 is heated and decomposes completely‚ what mass of oxygen gas is produced? KClO3 (s) --> KCl (s) + O2 (g) [unbalanced] Answer to Practice Problem #1: 1. Balance your equation first. 2KClO3 (s) --> 2KCl (s) + 3O2 (g) [balanced] 2. Convert from grams to moles using molar mass.
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CHLORINE Chlorine is an element I would like to present today. It is discovered in 1774 by Carl Wilhelm Scheele and was named by Sir Humphry Davy in 1810‚ after a Greek word‚ khlôros‚ which means greenish yellow. Chlorine is in the halogen group in the periodic table with an atomic number of seventeen. Pure chlorine is yellowish-green but most common compounds with chlorine are typically colourless. The element itself was first produced in 1774 by Carl Wilhelm Scheele‚ by heating hydrochloric acid
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1 a) Which element on the table i) is an alkali metal? Li‚ Na‚ K ii) can be cut with a knife? K‚ Na‚ Li b) Arrange the elements Li‚ Na and K in terms i) Hardness starting from the softest. K‚ Na‚ Li ii) Melting point starting from the least K‚ Na‚ Li iii) Density starting from the least. K‚ Na‚ Li iv) Reactivity starting from the least reactive. Li‚ Na‚ K c) A piece of sodium was dropped in a trough containing water
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Chlorine kid is 35.45 years old. Chlorine kid never ages after his incident from getting his powers‚ so‚ he’s technically only 4 years old. Chlorine kid got his powers after swimming in a swimming pool with too much chlorine and this is how it happened. Just that morning before chlorine kids parents took him swimming the manager of the pool refilled the pool with chlorine‚ while he was doing that the chlorine bucket slipped out of his hands and the chlorine overflowed the pool because of how much
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ways does chlorine in water affect our bodies? Chlorine is used as a disinfectant in water to prevent bacterial growth and transmission of harmful viruses‚ however studies show that the use of chlorine in our water can have serious negative impacts on our bodies. Chlorine is a chemical element which appears as a form of greenish-yellow gas but also appears in liquid and solid form‚ it is used widely in our daily lives. From our drinking water to our swimming pools‚ we use chlorine to cleanse
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