Download CHEMISTRY UNIT 10 CLASS NOTES Toxicity

TOXINS
Mrs. Howland
Chemistry 10
Rev. Feb 2016
Toxins
Learners will be able to…
Define toxins
Explain potential effects on the human body
TOXINS
Chemical properties
Balancing chemical
equations
Chemical changes
CHEMICAL EQUATIONS
Chemical formulas
Types of chemical
reactions
The MOLE
Chemical bonding
Mole conversions
Stoichiometry
What does this video talk about?
What are the implications on human health?
What was the cause?
What is your reaction?
https://www.youtube.com/watch?v=hqnaq2Vn-CA
Toxicity = The adverse affects of
poisons on the body
4 Types:
Local
Systemic
Acute
Chronic
4 Types:
Local = Example: burns on skin from
corrosive chemical
Systemic = Internal exposure and
damage; Example: lead poisoning
Acute =Short-term; usually reversible
damage
Chronic = Prolonged exposure; longterm effects; permenant damage
All types may be immediate or latent
Surface ~ Skin contact
May be absorbed into body
Inhalation ~ Respiratory
Injestion ~ Eating/drinking
Chlorpyrifos = Pesticide
Tolune = Improves octane ratings in gasoline; used to
make nylon and plastic drink bottles; solvent in paint
and adhesives
Manganese = Prevents metal corrosion (stainless steel;
soft drink cans)
Polychlorinated Biphenyls = Prevents spread of fire;
used in insulation, carbon paper, as engine coolant
Mercury = Used for fillings; found in fish
Fluoride = Toothpaste, water supply
Arsenic = Bronzing, pyrotechnics, pesticies (and some
foods such as brown rice!)
Toxins react with substances in the body such as
ions and oxygen
The effects of using the reactants from the body
and generating harmful products causes harm
Some toxins are not ‘flushed’ from the body and
build up over time
SOURCE:
http://pmep.cce.cornell.edu/profiles/extoxnet/TIB/manifestations.html