Chemistry of Persistent Organic Pollutants
Chemistry ⇒ Environmental Chemistry
Chemistry of Persistent Organic Pollutants starts at 11 and continues till grade 12.
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A lake near an industrial area shows high levels of PCBs in fish. Explain how this could affect humans who consume these fish.
A study finds that birds of prey have higher concentrations of DDT than herbivorous birds in the same area. What process does this illustrate?
Describe how the chemical structure of POPs contributes to their persistence in the environment.
Describe one method used to detect POPs in environmental samples.
A lake near an industrial area shows high levels of PCBs in fish. Explain how this could affect humans who consume these fish.
A study finds that birds of prey have higher concentrations of DDT than herbivorous birds in the same area. What process does this illustrate?
A river downstream from a pesticide manufacturing plant is found to have high concentrations of a certain POP. Over time, the concentration of this POP in predatory fish is much higher than in the water. Explain the chemical and biological processes responsible for this observation.
A scientist is studying the breakdown of a POP in soil and finds that it has a half-life of 15 years. If the initial concentration is 80 mg/kg, what will be the concentration after 30 years?
Which international treaty aims to eliminate or restrict the production and use of POPs?
(1) Kyoto Protocol
(2) Montreal Protocol
(3) Stockholm Convention
(4) Paris Agreement
Which of the following best describes Persistent Organic Pollutants (POPs)?
(1) Organic compounds that degrade quickly in the environment
(2) Organic compounds that persist in the environment, bioaccumulate, and pose risks to human health and ecosystems
(3) Inorganic compounds that are persistent in the environment
(4) Organic compounds that are beneficial to the environment
Which of the following is a common effect of POPs on wildlife?
(1) Increased fertility
(2) Disruption of reproductive systems
(3) Enhanced immune function
(4) Accelerated growth
Which of the following is a common use of DDT before it was banned in many countries?
(1) Fertilizer
(2) Insecticide
(3) Herbicide
(4) Fungicide
Fill in the blank: The abbreviation PCB stands for __________.
Fill in the blank: The chemical formula for DDT is __________.
Fill in the blank: The chemical structure of many POPs includes multiple __________ atoms attached to aromatic rings.
Fill in the blank: The main environmental concern with the use of POPs is their __________ and potential to cause long-term harm.
True or False: Dioxins are a group of POPs that are produced unintentionally during combustion processes.
True or False: PCBs were widely used as coolants and insulating fluids in electrical equipment.
True or False: POPs are highly soluble in water and do not accumulate in fatty tissues.
True or False: POPs are only a concern in developed countries.
