Laboratory Safety Practices Quiz

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Questions and Answers

What is the primary purpose of using fume hoods in the laboratory?

To store glassware

To dispose of waste

To dilute chemicals

To prevent inhalation of harmful fumes (correct)

It is safe to eat and drink in the chemistry lab as long as proper hygiene is maintained.

False

What should you do if you need to smell a chemical in the lab?

Waft the odor toward your nose with your hand.

The laboratory is considered safe when ______ precautions are taken.

intelligent Signup and view all the answers

Match the following safety practices with their descriptions:

Never eat in the lab = Prevents food contamination with toxic chemicals Never taste chemicals = Avoids ingestion of corrosive substances Use fume hoods = Reduces inhalation of harmful fumes Wafting odors = Ensures safer smelling practices Signup and view all the answers

What should you do if you accidentally spill chemicals on your skin?

Rinse the area with plenty of water immediately Signup and view all the answers

It is acceptable to return unused chemicals to their original containers once you are done using them.

False Signup and view all the answers

What should you use to remove hot containers from a hot plate?

Beaker tongs Signup and view all the answers

Always keep chemicals in __________ areas to ensure safety.

designated Signup and view all the answers

Match the following emergency procedures with their appropriate actions:

Safety shower = Rinse off chemicals from your body Fire extinguisher = Put out small fires Eye-wash fountain = Flush chemicals from your eyes Fire blanket = Smother flames on clothing Signup and view all the answers

What is the primary action to take in a toxic atmosphere situation?

Evacuate the contaminated area Signup and view all the answers

A respiratory protection cartridge mask is recommended when dealing with simple wounds.

False Signup and view all the answers

What should you use to treat simple wounds?

Sterile compresses Signup and view all the answers

A hazard label must contain the relevant ____________, describing the hazardous effects of the product.

hazard statements Signup and view all the answers

Match the action to the respective hazard context:

Toxic Atmosphere = Evacuate the contaminated area Simple Wounds = Apply sterile compresses Product Reversal = Ventilate the room Hazard Label = Contains supplier's contact information Signup and view all the answers

What should be done with clothing during lab sessions?

Wear clothing that covers as much skin as possible Signup and view all the answers

Students are allowed to place their book bags on the lab benchtop during the experiment.

False Signup and view all the answers

What should you do if you arrive late to lab?

You may miss safety precautions and the instructor may deny you the privilege of completing the experiment. Signup and view all the answers

At the end of lab sessions, it is essential to return clean glassware to your ______.

drawer Signup and view all the answers

Match each lab procedure with its description:

Dress Properly = Wear appropriate clothing and footwear Read the Experiment = Understand the experiment prior to lab Work Independently = Focus on individual tasks unless instructed Clean Up at the End of Lab = Return items and leave the workspace tidy Signup and view all the answers

What should you do in the case of thermal or chemical burns?

Put under running water for at least 15 minutes Signup and view all the answers

For eye projections, it is recommended to put the eye under running water for at least 15 minutes and consult an ophthalmologist.

True Signup and view all the answers

What should you never do in case of ingestion burns?

Do not vomit or give anything to drink. Signup and view all the answers

In the event of a fire on a person, you should immobilize the victim and use a __________ to stifle the flames.

fire blanket Signup and view all the answers

Match the types of accidents with the recommended conduct:

Thermal or chemical burns = Put under running water for at least 15 minutes Electrical accident = Cut the power and do not touch the victim Fire on a person = Immobilize and use a fire blanket Eye projection = Rinse under running water and consult ophthalmologist Signup and view all the answers

Which pictogram represents chemicals that can explode?

Exploding Bomb Signup and view all the answers

The Exclamation Mark pictogram is used for chemicals that are highly toxic and cause severe health problems.

False Signup and view all the answers

What type of hazards does the Corrosion pictogram indicate?

Skin corrosion/burns, eye damage, corrosive to metals Signup and view all the answers

The ______ pictogram warns users that the chemical can cause serious health problems including carcinogenic effects.

Health Hazard Signup and view all the answers

Match the following pictograms with their meanings:

Flame = These chemicals burn or can release gases that burn. Environment = These chemicals are dangerous if they get into rivers, lakes, or oceans. Gas Cylinder = Gases and liquids under pressure can explode. Skull and Cross-bone = These chemicals are poisons that quickly cause sickness or death. Signup and view all the answers

Which pictogram would you find on a label of a chemical that is a respiratory irritant?

Exclamation Mark Signup and view all the answers

All chemicals with the Flame pictogram are considered pyrophoric.

False Signup and view all the answers

Which pictogram signifies that the chemical can cause skin burns?

Corrosion Signup and view all the answers

Which of the following is NOT a hazard statement associated with the sample substance?

May cause allergic reactions Signup and view all the answers

The signal word on the hazard label is 'Warning'.

False Signup and view all the answers

What is the nominal quantity of the supplied substance?

800ml Signup and view all the answers

The hazard pictograms displayed on the label include a flame icon, an exclamation mark, and a ______.

skull and crossbones Signup and view all the answers

Match the following statements to their correct categories:

IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. = Hazard statement Keep out of reach of children = Precautionary statement Causes skin irritation = Danger Keep away from heat/sparks/open flames/hot surfaces - No smoking = Precautionary statement Signup and view all the answers

What is the correct way to take a measurement using a graduated cylinder?

Take the measurement at eye level from the bottom of the meniscus. Signup and view all the answers

A volumetric flask is used primarily for measuring small volumes of liquid.

False Signup and view all the answers

What type of pipet is used for precise measurement?

Mohr pipets Signup and view all the answers

A __________ is used to measure volumes of liquids in milliliters.

graduated cylinder Signup and view all the answers

Match the following laboratory instruments with their uses:

Graduated Cylinder = Measure volumes of liquids Volumetric Flask = Prepare solutions accurately Pipet = Transfer liquids precisely Flask = Swirl solutions while minimizing loss Signup and view all the answers

Which laboratory equipment is best suited for measuring liquid volume accurately?

Graduated cylinder Signup and view all the answers

Erlenmeyer flasks are primarily used for exact measurements of volume.

False Signup and view all the answers

What is the primary use of a pipette in the lab?

Transferring small volumes of liquids Signup and view all the answers

The __________ is used for grinding solids in a lab.

Mortar & Pestle Signup and view all the answers

Match the following lab equipment with their primary use:

Beaker = Mixing chemicals Funnel = Transferring and separating liquids Test tube = Controlling small amounts of substances Hot Plate = Heating glassware safely Signup and view all the answers

Which piece of equipment is designed to provide support during experiments?

Clamp Signup and view all the answers

Gloves are primarily used for measuring mass in the laboratory.

False Signup and view all the answers

What is the main function of a wire mesh in a laboratory setting?

To prevent direct contact of glassware with a flame. Signup and view all the answers

A __________ is commonly used for heating glassware in a laboratory without direct flame contact.

Laboratory Hot Plate Signup and view all the answers

Which laboratory equipment is mainly utilized for holding multiple items?

Rack Signup and view all the answers

What is the primary use of a buret in laboratory settings?

To measure reagent volumes Signup and view all the answers

Test tube racks can only be used to hold test tubes upright.

False Signup and view all the answers

What is the purpose of a mortar and pestle in a laboratory?

To crush and grind substances into a fine paste or powder. Signup and view all the answers

A _______ is used to pour liquids into narrow-mouth containers.

funnel Signup and view all the answers

Match the laboratory instruments with their respective functions:

Buret = Measures reagent volumes Ring Stand = Supports laboratory equipment Test Tube Clamp = Holds test tubes and cylindrical equipment Test Tube Brush = Cleans narrow-mouth glassware Signup and view all the answers

Study Notes

Lab Safety Rules

Never perform unauthorized experiments and never work in the lab without an instructor in charge.
Never remove anything (chemicals, glassware, etc.) from the lab.
Label all containers to identify their contents.
Never put anything back into a reagent bottle. Once a reagent has passed the mouth of its container, it has passed the point of no return.
Always take as little of a chemical as possible. Use only clean, dry spatulas for removing chemicals from bottles.
Properly dispose of excess chemicals.
Leave chemicals in their proper place. Do not carry original containers of chemicals to your benchtop.
Avoid touching hot objects. Burns are a common accident in the chemistry lab.
Be careful when using hot plates and objects which have been heated on them.
Rinse spills off skin immediately. Rinse off any chemicals spilled on the skin immediately with large amounts of water.
Clean up broken glassware immediately. Place it in the labeled crock at the front of the lab. Obtain replacement glassware from the instructor.
Properly dispose of waste chemicals. Certain liquids can be poured into the sink and flushed with water while others are poured into designated waste containers. Most solid wastes are placed in designated crocks. Your instructor will provide disposal instructions each lab.
Notify your instructor immediately of all accidents.
Learn to locate and operate (if applicable) the safety shower, fire extinguisher, eye-wash fountain, fire blanket, and fire exit.

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Test your knowledge of essential laboratory safety practices with this quiz. Questions cover safe handling of chemicals, emergency procedures, and proper use of safety equipment. Ensure you're well-prepared for a safe lab environment.

Laboratory Safety Practices Quiz

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Podcast

Questions and Answers

What is the primary purpose of using fume hoods in the laboratory?

It is safe to eat and drink in the chemistry lab as long as proper hygiene is maintained.

What should you do if you need to smell a chemical in the lab?

The laboratory is considered safe when ______ precautions are taken.

Match the following safety practices with their descriptions:

What should you do if you accidentally spill chemicals on your skin?

It is acceptable to return unused chemicals to their original containers once you are done using them.

What should you use to remove hot containers from a hot plate?

Always keep chemicals in __________ areas to ensure safety.

Match the following emergency procedures with their appropriate actions:

What is the primary action to take in a toxic atmosphere situation?

A respiratory protection cartridge mask is recommended when dealing with simple wounds.

What should you use to treat simple wounds?

A hazard label must contain the relevant ____________, describing the hazardous effects of the product.

Match the action to the respective hazard context:

What should be done with clothing during lab sessions?

Students are allowed to place their book bags on the lab benchtop during the experiment.

What should you do if you arrive late to lab?

At the end of lab sessions, it is essential to return clean glassware to your ______.

Match each lab procedure with its description:

What should you do in the case of thermal or chemical burns?

For eye projections, it is recommended to put the eye under running water for at least 15 minutes and consult an ophthalmologist.

What should you never do in case of ingestion burns?

In the event of a fire on a person, you should immobilize the victim and use a __________ to stifle the flames.

Match the types of accidents with the recommended conduct:

Which pictogram represents chemicals that can explode?

The Exclamation Mark pictogram is used for chemicals that are highly toxic and cause severe health problems.

What type of hazards does the Corrosion pictogram indicate?

The ______ pictogram warns users that the chemical can cause serious health problems including carcinogenic effects.

Match the following pictograms with their meanings:

Which pictogram would you find on a label of a chemical that is a respiratory irritant?

All chemicals with the Flame pictogram are considered pyrophoric.

Which pictogram signifies that the chemical can cause skin burns?

Which of the following is NOT a hazard statement associated with the sample substance?

The signal word on the hazard label is 'Warning'.

What is the nominal quantity of the supplied substance?

The hazard pictograms displayed on the label include a flame icon, an exclamation mark, and a ______.

Match the following statements to their correct categories:

What is the correct way to take a measurement using a graduated cylinder?

A volumetric flask is used primarily for measuring small volumes of liquid.

What type of pipet is used for precise measurement?

A __________ is used to measure volumes of liquids in milliliters.

Match the following laboratory instruments with their uses:

Which laboratory equipment is best suited for measuring liquid volume accurately?

Erlenmeyer flasks are primarily used for exact measurements of volume.

What is the primary use of a pipette in the lab?

The __________ is used for grinding solids in a lab.

Match the following lab equipment with their primary use:

Which piece of equipment is designed to provide support during experiments?

Gloves are primarily used for measuring mass in the laboratory.

What is the main function of a wire mesh in a laboratory setting?

A __________ is commonly used for heating glassware in a laboratory without direct flame contact.

Which laboratory equipment is mainly utilized for holding multiple items?

What is the primary use of a buret in laboratory settings?

Test tube racks can only be used to hold test tubes upright.

What is the purpose of a mortar and pestle in a laboratory?

A _______ is used to pour liquids into narrow-mouth containers.

Match the laboratory instruments with their respective functions:

Study Notes

Lab Safety Rules

Studying That Suits You

Description

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