1. AIM: What are some inorganic pollutants that can contaminate our water
AIM: What are some inorganic pollutants that can contaminate our water? DN: What are toxic chemicals? How do they get into our drinking water? HW: Article due Friday

2. Toxic chemicals
Elements and compounds that are directly harmful to living things

3. Inorganic Chemicals Metals, salt, minerals
Enter water as a result of seepage, runoff, direct discharge from rivers, lakes, streams

5. Arsenic Natural deposits and Runoff from agriculture and industry
Odorless and tasteless
Symptoms:
Skin lesions
Gastrointestinal upset
cancer

6. Copper Natural deposits and corrosion of plumbing Symptoms:
Short term: gastrointestinal upset
Long term: kidney and liver

7. Lead Behavioral problems and learning disabilities in young children
Plumbing systems
1986- ban of lead in pipes

8. Mercury
Liquid metal found in natural deposits, discharge from factories
Symptoms: neurological

9. Mercury Poisoning “Mad hatters disease”
Common to hat makers
caused tremors, nerve damage, insanity, lack of coordination

10. biomagnification of mercury

11. plum

12. Metal Drums filled with factory waste
Drums eventually begin to corrode causing the waste to seep into groundwater

14. Oil Spills Oil spills: kills many organisms, upsets the ecosystem
1989- Exxon Valdez Oil Spill in the Prince William Sound
2010- Deep Water Horizon oil spill in the Gulf of Mexico

16. Cat Island
BP Oil Spill timeline

18. What are toxic chemicals?
What is the difference between organic and inorganic chemicals?
What are heavy metals? Give some examples of heavy metals.
How do heavy metals enter the water systems?
What are some health risks associated with heavy metals?
Identify some examples of organic pollutants.
Why are oil spills dangerous to water ecosystems?