Effects of Drugs, Smoking, Alcohol

A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Drugs, Smoking and Alcohol
• Chemicals that affect the central nervous, changing behaviour and possibly addiction.

• Stimulant (e.g. Caffeine): speeds up reactions
  
• Depressant (e.g. Alcohol): slows reactions
  
• Painkillers (e.g. Morphine): blocks nerve impulses
  
• Halucinogen (e.g. LSD): changes sense perception

• Tobacco smoke contains many chemicals affecting health

• Nicotine: Stimulant, addictive
  
• Tar: Carcinogen (causes cancer)
  
• Carbon monoxide: Reduces oxygen levels in blood

• Alcohol

• Short term effects: Blurred vision, lowered inhibitions, slowed reactions
  
• Long term effects: Liver cirrhosis (could require transplant), brain damage

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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