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Tobacco
 

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.

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 Tobacco Presentation Transcript

    • Tobacco – An overview
    • Tobacco
      • The three main constituents of tobacco smoke are nicotine, carbon monoxide, and tar.
      • Nicotine, the main active ingredient, comprises about 1.5% of the average cigarette.
      • The chemical formula of nicotine is 3-(1-methyl-2-pyrrolidinyl)pyridine. The chemical structure is:
      • When nicotine is smoked:
        • the molecules are inhaled into the lungs where they are absorbed by the blood stream.
        • They travel to the brain where it locks into specific receptor areas.
      • This receptor then releases dopamine, which causes the smoker to experience pleasurable, positive feelings.
      • Part of the addiction to tobacco is physically needing this release of dopamine.
      • Carbon monoxide (CO) is a poisonous gas that is also inhaled into the lungs and absorbed by the blood.
        • 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.
      • Tar is the mixture of chemicals formed when tobacco is burned including cyanide, sulfides, and carcinogenic (cancer-inducing) compounds.
        • Tar sticks to your lung tissue and blocks the exchange of oxygen and carbon dioxide.
      • Costs of Smoking
      • Average cost of a pack of cigarettes in Colorado is $4.13
      • How much money would a pack-a-day smoker save over a year by quitting?
      • Over a lifetime - 60 years of smoking?
      • 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