Basic substance of cigarettePresentation Transcript
BASIC SUBSTANCE OF CIGARETTE BASIC SUBSTANCE OF CIGARETTES AND THEIR HARMFUL EFFECTS
The lungs are made up of approximately 350 million tiny sacs called alveoli, where carbon dioxide from the body is exchanged for oxygen from the air. Various diseases that affect the lungs either destroy the alveoli directly, as does emphysema, or impair the alveoli’s ability to exchange gases. This picture shows the effects of emphysema (caused by smoking) on lung tissue.
Main substance of cigarette NICOTINE - stimulant TAR- yellow brown substance CARBON MONOXIDE- odorless and poisonous gas
Elements of tobacco BENZOPYRENE Yellowish crystalline solid in cigarette
METHANOL poisonous alcohol used in fuel or solvent
ACETIC ACID Main component of vinegar
CADMIUM Metallic element in denture
FORMALDEHYDE gas, use to preserve organic substance
ARSENIC Poisonous element used in glass manufacturing
AMMONIA Gas, used in explosive and plastic
B UTANE Flammable gas used in fuel.
NITROGEN DIOXIDE – brown gas, poisonous Present in smog Exhaust in vehicle
HYDROGEN CYNIDE – very poisonous gas.
question WHAT ARE THE SUBSTANCES THAT CAN BE FOUND IN A TOBACCO?