Tobacco

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This presentation gives an overview to the major parts of tobacco and the chemical reactions that occur when a person inhales tobacco. It is geared to a high school chemistry audience.

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Tobacco

  1. 1. Tobacco – An overview
  2. 2. Tobacco <ul><li>The three main constituents of tobacco smoke are nicotine, carbon monoxide, and tar. </li></ul>
  3. 3. <ul><li>Nicotine, the main active ingredient, comprises about 1.5% of the average cigarette. </li></ul><ul><li>The chemical formula of nicotine is 3-(1-methyl-2-pyrrolidinyl)pyridine. The chemical structure is: </li></ul>
  4. 4. <ul><li>When nicotine is smoked: </li></ul><ul><ul><li>the molecules are inhaled into the lungs where they are absorbed by the blood stream. </li></ul></ul><ul><ul><li>They travel to the brain where it locks into specific receptor areas. </li></ul></ul>
  5. 5. <ul><li>This receptor then releases dopamine, which causes the smoker to experience pleasurable, positive feelings. </li></ul><ul><li>Part of the addiction to tobacco is physically needing this release of dopamine. </li></ul>
  6. 6. <ul><li>Carbon monoxide (CO) is a poisonous gas that is also inhaled into the lungs and absorbed by the blood. </li></ul><ul><ul><li>CO takes the place of oxygen and is transported to cells all over the body by hemoglobin. The cells die because of the need for oxygen in cellular respiration. </li></ul></ul>
  7. 7. <ul><li>Tar is the mixture of chemicals formed when tobacco is burned including cyanide, sulfides, and carcinogenic (cancer-inducing) compounds. </li></ul><ul><ul><li>Tar sticks to your lung tissue and blocks the exchange of oxygen and carbon dioxide. </li></ul></ul>
  8. 8. <ul><li>Costs of Smoking </li></ul><ul><li>Average cost of a pack of cigarettes in Colorado is $4.13 </li></ul><ul><li>How much money would a pack-a-day smoker save over a year by quitting? </li></ul><ul><li>Over a lifetime - 60 years of smoking? </li></ul>
  9. 9. <ul><li>Taking into account increased health care costs, increased insurance costs, and loss of wages due to smoking-related illness, the cost per pack of cigarettes averages around $40 </li></ul>

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