Health Effects of Chemicals
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Questions and Answers

The health effects may be ______, such as irritation of the skin, sickness, or they may be permanent:

temporary

The health effects may be temporary, such as ______ of the skin, sickness, or they may be permanent:

irritation

The health effects may be temporary, such as irritation of the ______, sickness, or they may be permanent:

skin

The health effects may be temporary, such as irritation of the skin, ______, or they may be permanent:

<p>sickness</p> Signup and view all the answers

The health effects may be temporary, such as irritation of the skin, sickness, or they may be ______:

<p>permanent</p> Signup and view all the answers

The concentration of the chemical in air that kills 50% of the test animals in a given time is the ______ value.

<p>LC50</p> Signup and view all the answers

Lower the ______ value, the more toxic is the chemical.

<p>LD50/LC50</p> Signup and view all the answers

Ali‬‬ is the name of the _______

<p>doctor</p> Signup and view all the answers

The ______ of the chemical in air that kills 50% of the test animals in a given time is the LC50 value.

<p>concentration</p> Signup and view all the answers

The ______ value is the measure of the chemical's toxicity.

<p>LC50</p> Signup and view all the answers

The text is about _______ safety.

<p>chemical</p> Signup and view all the answers

The year mentioned in the text is _______.

<p>2023</p> Signup and view all the answers

If the ______ value is lower, the chemical is more toxic.

<p>LD50/LC50</p> Signup and view all the answers

Toxic materials can cause harm if they _______ the body.

<p>enter</p> Signup and view all the answers

The effects of toxic materials are of two types: _______ and chronic.

<p>acute</p> Signup and view all the answers

Occupational diseases may also result from ingestion of chemical substances such as ______, mercury, arsenic, zinc, cadmium, phosphorous, etc.

<p>lead</p> Signup and view all the answers

Occupational diseases may also result from ingestion of chemical substances such as lead, ______, arsenic, zinc, cadmium, phosphorous, etc.

<p>mercury</p> Signup and view all the answers

Occupational diseases may also result from ingestion of chemical ______ of chemical substances such as lead, mercury, arsenic, zinc, cadmium, phosphorous, etc.

<p>substances</p> Signup and view all the answers

Occupational diseases may also result from ______ of chemical substances such as lead, mercury, arsenic, zinc, cadmium, phosphorous, etc.

<p>ingestion</p> Signup and view all the answers

Occupational diseases may also result from ingestion of ______ substances such as lead, mercury, arsenic, zinc, cadmium, phosphorous, etc.

<p>chemical</p> Signup and view all the answers

This can vary from several weeks to ______.

<p>years</p> Signup and view all the answers

LD ______ stands for "Lethal Dose"

<p>50</p> Signup and view all the answers

This results from multiple exposures to the ______ chemical in sufficient concentrations.

<p>toxic</p> Signup and view all the answers

This can vary from ______ to years.

<p>several weeks</p> Signup and view all the answers

[Blank] stands for "Lethal Dose".

<p>LD50</p> Signup and view all the answers

Study Notes

Toxic Materials

  • Toxic materials are substances that can cause harm to an individual if they enter the body.
  • The effects of toxic materials can be:
    • Acute: temporary health effects, such as irritation of the skin or sickness.
    • Chronic: permanent health effects, such as blindness or scars from acid burns.

LD50 and LC50

  • LD stands for "Lethal Dose".
  • LD50: the dose of a chemical that kills 50% of test animals in a given time.
  • LC50: the concentration of a chemical in air that kills 50% of test animals in a given time.
  • Lower LD50/LC50 values indicate a more toxic chemical.

Ingestion of Toxic Substances

  • Ingestion of toxic substances can lead to occupational diseases.
  • Examples of toxic substances that can be ingested include:
    • Lead
    • Mercury
    • Arsenic
    • Zinc
    • Cadmium
    • Phosphorous
  • Hazards symbols are used to indicate the presence of toxic substances.

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Description

This quiz assesses knowledge about the health effects of chemicals, including temporary and permanent effects such as skin irritation, sickness, blindness, and acid burns.

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