Chemistry Laboratory Safety Quiz

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Questions and Answers

What was the cause of Michele Dufault's death?

  • Chemical poisoning
  • Accidental asphyxia by neck compression (correct)
  • Gunshot wound
  • Falling from a height

Where was Michele Dufault when the accident occurred?

  • Student dormitory
  • Physics and astronomy lab
  • University library
  • Chemistry lab machine shop (correct)

What was Michele Dufault majoring in?

  • Chemistry
  • Biology
  • Mechanical engineering
  • Physics and astronomy (correct)

Where is Michele Dufault's hometown?

<p>Scituate, Massachusetts (C)</p> Signup and view all the answers

What caused the fiery accident involving Sheri Sangji in the chemistry laboratory?

<p>Accidental ignition of a compound (A)</p> Signup and view all the answers

Which term best describes the materials that belong to the pyrophoric class?

<p>Ignite upon exposure to air (B)</p> Signup and view all the answers

What is the consequence of exposure of pyrophoric materials to air?

<p>Rapid ignition (B)</p> Signup and view all the answers

Why is chemistry often described as having a wonderfully explosive nature?

<p>Because teachers use fiery demonstrations to engage students (C)</p> Signup and view all the answers

What charges were the defendants facing in the UCLA case?

<p>Charges of violating occupational standards (C)</p> Signup and view all the answers

Who was Sheri Sangji in relation to the case?

<p>The deceased whose death was associated with the violations (D)</p> Signup and view all the answers

How did Sangji sustain her injuries according to the text?

<p>Her hair got caught in a lab machine shop (A)</p> Signup and view all the answers

What did Harran express following Sangji's death?

<p>Shock and grief (C)</p> Signup and view all the answers

What term describes materials that ignite upon exposure to air?

<p>Pyrophoric (B)</p> Signup and view all the answers

What was Sheri Sangji's occupation at the time of the accident?

<p>Research assistant (A)</p> Signup and view all the answers

What university was Sheri Sangji working at when the accident occurred?

<p>University of California, Los Angeles (C)</p> Signup and view all the answers

Which department does the settlement mention in relation to the felony charges?

<p>Laboratory Operations (B)</p> Signup and view all the answers

What class of materials do pyrophoric substances belong to?

<p>Materials that ignite spontaneously (D)</p> Signup and view all the answers

What aspect of t-butyllithium caused the burns described in the text?

<p>Its corrosive nature (D)</p> Signup and view all the answers

In what context was Richard Harran charged in the UCLA case?

<p>Inadequate laboratory safety practices (A)</p> Signup and view all the answers

What was the specific reason for Sangji's death according to the text?

<p>Violation of safety regulations (D)</p> Signup and view all the answers

What was the role of Sheri Sangji in the laboratory where the accident occurred?

<p>Research assistant (C)</p> Signup and view all the answers

Why did Sangji sustain severe burns according to the text?

<p>Failure to follow safety protocols (D)</p> Signup and view all the answers

What was the official cause of Michele Dufault's death?

<p>Neck compression (A)</p> Signup and view all the answers

What was the primary consequence of Michele Dufault's hair getting caught in the lathe?

<p>Asphyxiation by neck compression (A)</p> Signup and view all the answers

How did Richard Levin describe Michele Dufault's passing in his message to Yale students and faculty?

<p>'A true tragedy' (C)</p> Signup and view all the answers

What was Michele Dufault majoring in at Yale University?

<p>Physics and Astronomy (B)</p> Signup and view all the answers

Where was Michele Dufault's body discovered after the unfortunate incident?

<p>Chemistry lab machine shop (D)</p> Signup and view all the answers

What is the consequence of adding a solvent to nitric acid, according to the text?

<p>Spark leading to a flash and smoke (D)</p> Signup and view all the answers

What is the purpose of Yale's state-of-the-art machine shop as mentioned in the text?

<p>For faculty and staff to modify research instruments (C)</p> Signup and view all the answers

How did the chemical reaction in the lab involving Michele Dufault occur?

<p>Flash caused by combining substances (D)</p> Signup and view all the answers

What did Trenton Department Captain Michael Oakley confirm about the unplanned chemical reaction?

<p>The involvement of incompatible chemicals (D)</p> Signup and view all the answers

What was Michele Dufault's intended career path after graduating, as mentioned in the text?

<p>Oceanographer (A)</p> Signup and view all the answers

What is the recommended personal protective equipment (PPE) when working in a laboratory setting?

<p>Safety glasses/goggles, long lab coat, close-toed shoes, long pants, and gloves (D)</p> Signup and view all the answers

What should you do before handling a chemical in the laboratory?

<p>Check if gloves are required and what type of gloves should be worn (A)</p> Signup and view all the answers

What is the recommended action for heating Pyrex containers in the laboratory?

<p>Heat them in an open flame (B)</p> Signup and view all the answers

In case of reactions producing gases, what safety equipment should be used in a laboratory setting?

<p>Fume hood or vent (C)</p> Signup and view all the answers

What should never be done with unlabeled chemical containers in a laboratory?

<p>Use them without checking the contents (B)</p> Signup and view all the answers

What is the recommended action for solid chemical spills in a laboratory?

<p>Brush the solid spills into a dustpan and deposit in the garbage (D)</p> Signup and view all the answers

When should vents above a lab bench be lowered for maximum effectiveness?

<p>Over the area where fumes are produced (D)</p> Signup and view all the answers

What is the proper procedure for dealing with an acid spill in a laboratory?

<p>Neutralize the spill with a solid acid neutralizer and sweep up the residue (D)</p> Signup and view all the answers

What should be done with broken glass in a laboratory setting?

<p>Deposit in the garbage (B)</p> Signup and view all the answers

Why is it important to keep chemicals separate in a laboratory setting?

<p>To prevent chemical reactions from occurring (C)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides?

<p>Convert to non-toxic cyanates using bleach (B)</p> Signup and view all the answers

How should lead, cadmium, and antimony salts be disposed of?

<p>Convert to insoluble sulfides and bury in landfill (D)</p> Signup and view all the answers

What is the recommended method for destroying peroxides?

<p>Shake with sodium metabisulfite solution (D)</p> Signup and view all the answers

How should strong oxidizing agents be rendered safe for disposal?

<p>Reduced with 10% sodium bisulfite and then flushed down the drain (D)</p> Signup and view all the answers

What should be done with silver & nickel wastes according to the text?

<p>Recover and reuse (D)</p> Signup and view all the answers

How are organic solvents typically stored in laboratories?

<p>Stored in glass or metal containers in the fumehood (D)</p> Signup and view all the answers

What is the recommended method for disposing non-hazardous solids?

<p>. Disposing of in the regular garbage (C)</p> Signup and view all the answers

How should acids & bases be neutralized before disposal?

<p>Mixed together to neutralize, tested with litmus paper, and then flushed down sink with large amounts of water (C)</p> Signup and view all the answers

How can lead, cadmium, and antimony salts be made safe for disposal?

<p>Converted to insoluble sulfides (D)</p> Signup and view all the answers

What is an appropriate method for disposing silver & nickel wastes?

<p>Recover and reuse (D)</p> Signup and view all the answers

What term best describes materials that ignite spontaneously upon exposure to air?

<p>Pyrophoric materials (C)</p> Signup and view all the answers

Which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?

<p>Dry chemical fire extinguisher (C)</p> Signup and view all the answers

What is the purpose of Met-L-X in laboratory safety?

<p>Extinguishing combustible metal fires (A)</p> Signup and view all the answers

In a laboratory setting, which type of fire is wet chemical fire extinguishers most effective against?

<p>Class K fires (cooking oils) (D)</p> Signup and view all the answers

Why are organic solvents typically stored in flammable storage cabinets in laboratories?

<p>To minimize the risk of fire (C)</p> Signup and view all the answers

What specific charges were the defendants in the UCLA case facing in relation to the death of Sheharbano Sangji?

<p>Violating fire safety protocols (A)</p> Signup and view all the answers

How did Richard Harran describe Sheri Sangji's death?

<p>A shocking event resulting from severe burns (B)</p> Signup and view all the answers

In what context was Sangji's abdominal wall burned off?

<p>Handling t-butyllithium without proper safety gear (A)</p> Signup and view all the answers

What role did Sheri Sangji have at the time of the lab accident?

<p>Research Assistant (D)</p> Signup and view all the answers

What was the cause of Michele Dufault's passing at Yale University?

<p>Hair Entanglement in Machinery (B)</p> Signup and view all the answers

What is the primary purpose of Met-L-X, as mentioned in the text?

<p>Extinguishing fires caused by flammable metals (D)</p> Signup and view all the answers

In the context of the text, what is Halotron commonly used for in laboratory settings?

<p>Extinguishing fires without leaving any residue (D)</p> Signup and view all the answers

What is the recommended action when facing a fire involving wet chemicals in a laboratory?

<p>Evacuate the area and then call emergency services (A)</p> Signup and view all the answers

What is the function of a wet chemical extinguisher in laboratory safety?

<p>Extinguishing fires involving electrical equipment (C)</p> Signup and view all the answers

In the context of laboratory safety, what do Halogenated Hydrocarbons primarily refer to?

<p>Compounds that can be toxic when inhaled (A)</p> Signup and view all the answers

What is the consequence when incompatible chemicals react in a laboratory setting, as described in the text?

<p>They lead to a flash and smoke, possibly sparking a fire. (C)</p> Signup and view all the answers

Based on the text, what safety measure was not followed that led to the chemical reaction in the lab?

<p>Proper storage of chemicals (B)</p> Signup and view all the answers

In the incident described, what was the immediate result of adding a solvent to nitric acid?

<p>Formation of a flash and smoke (A)</p> Signup and view all the answers

What was the primary reason for the guard and two students being treated after the chemical reaction in the lab?

<p>Exposure to a plume of vapors (B)</p> Signup and view all the answers

What was indicated as access requirements for Yale's state-of-the-art machine shop where the incident occurred?

<p>Completion of a shop course (C)</p> Signup and view all the answers

What is the correct procedure to follow when heating flammable materials in a laboratory setting?

<p>Heat the material using a Bunsen burner in a fume hood (A)</p> Signup and view all the answers

What is the safest approach for disposing of solid chemical spills in a laboratory?

<p>Use proper spill kits and follow the specific disposal instructions for each chemical spilled (C)</p> Signup and view all the answers

What is the recommended method for neutralizing acids and bases before disposal in a laboratory?

<p>Add water to acids and bases slowly while stirring, then dispose following guidelines (B)</p> Signup and view all the answers

What type of personal protective equipment (PPE) should be worn when handling wet chemicals in a laboratory?

<p>Gloves, long lab coat, safety glasses, close-toed shoes (C)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides in a laboratory environment?

<p>Follow specific disposal guidelines for hazardous waste when dealing with soluble cyanides (A)</p> Signup and view all the answers

What type of fire are wet chemical fire extinguishers most effective against?

<p>Class B fires (B)</p> Signup and view all the answers

What is the purpose of Met-L-X in laboratory safety?

<p>To extinguish fires caused by combustible metals (D)</p> Signup and view all the answers

What term best describes the materials that belong to the pyrophoric class?

<p>Flammable (D)</p> Signup and view all the answers

In a laboratory setting, which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?

<p>Dry chemical fire extinguishers (C)</p> Signup and view all the answers

Why should vents above a lab bench be lowered for maximum effectiveness?

<p>To ensure proper ventilation over the fume-producing area (A)</p> Signup and view all the answers

What is the recommended procedure for disposing of lead, cadmium, and antimony salts in a laboratory setting?

<p>Convert to insoluble sulfides and bury in a landfill (A)</p> Signup and view all the answers

Which method is suggested for rendering peroxides safe for disposal in a laboratory?

<p>Shaking with sodium metabisulfite solution (A)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides according to the text?

<p>React with bleach to form non-toxic cyanates (C)</p> Signup and view all the answers

How are strong oxidizing agents like potassium permanganate and sodium chlorate rendered safe for disposal?

<p>Neutralized with 10% sodium bisulphite (A)</p> Signup and view all the answers

What is the purpose of Met-L-X mentioned in the text regarding laboratory safety?

<p>To extinguish metal fires (B)</p> Signup and view all the answers

Which class of materials belong to pyrophoric substances according to the text?

<p>Materials that ignite upon exposure to air (B)</p> Signup and view all the answers

What type of fire are wet chemical fire extinguishers most effective against in a laboratory setting?

<p>Flammable liquid fires (C)</p> Signup and view all the answers

How should acids and bases be neutralized before disposal according to the information provided?

<p>Neutralized, tested with litmus paper, and then flushed down sink (B)</p> Signup and view all the answers

How should organic solvents like diethyl ether and toluene typically be stored in laboratories?

<p>In metal containers within a fumehood (C)</p> Signup and view all the answers

Flashcards

Cause of Michele Dufault's death?

Accidental asphyxia by neck compression.

Where was Michele Dufault's accident?

Chemistry lab machine shop.

Michele Dufault's Major?

Physics and astronomy.

Michele Dufault's Hometown?

Scituate, Massachusetts.

Signup and view all the flashcards

Cause of Sheri Sangji's accident?

Accidental ignition of a compound.

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Pyrophoric Materials

Ignite upon exposure to air.

Signup and view all the flashcards

Exposure to pyrophoric materials

Rapid ignition.

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UCLA Case Charges

Charges of violating occupational standards.

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Who was Sheri Sangji?

The deceased whose death was associated with the violations.

Signup and view all the flashcards

How did Sangji sustain her injuries?

Her hair got caught in a lab machine shop.

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Harran's reaction to Sangji's death?

Shock and grief.

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Sheri Sangji's Occupation?

Research assistant.

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Sangji's University?

University of California, Los Angeles.

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Department named in settlement

Laboratory Operations.

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Pyrophoric substances?

Materials that ignite spontaneously.

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Why t-butyllithium caused burns?

Its corrosive nature.

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Why was Harran charged?

Inadequate laboratory safety practices.

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Reason for Sangji's death?

Violation of safety regulations.

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Sangji's role in the lab?

Research assistant

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Why Sangji sustained severe burns?

Failure to follow safety protocols.

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Official cause of Dufault's death?

Neck compression

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Primary consequence: hair in lathe?

Asphyxiation by neck compression

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How Levin described Dufault's death?

'A true tragedy'

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How Dufault's chemical reaction occurred?

Flash caused by combining substances

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Recommended PPE in lab?

Use safety glasses/goggles, long lab coat, close-toed shoes, long pants, and gloves.

Signup and view all the flashcards

Recommended action for spills?

Brush the solid spills into a dustpan and deposit in the garbage

Signup and view all the flashcards

What to do with broken glass

Deposited in the garbage.

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How to dispose of acids & bases

Mixed together to neutralize, tested with litmus paper, and then flushed down sink with large amounts of water.

Signup and view all the flashcards

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