Lab Saftey Quiz

When you read the label on a chemical container, what are the three most important pieces of information?

Chemical Name, Hazard Warnings, Concentration or Purity

How many times must you read this information BEFORE you open the container?

Two times to ensure accuracy and safety.

Why is it important to be exact when preparing a chemical reaction?

Precision is crucial to ensure the reaction proceeds correctly and safely.

What should you do with leftover chemicals?

Dispose of them according to your lab's waste disposal protocols.

What should you do with the products of an experiment?

Properly store or dispose of them according to lab guidelines.

How do you draw chemicals into a pipet?

Use a pipet bulb or pump, never by mouth.

Why should you read the entire procedure BEFORE beginning an experiment?

To fully understand the steps and avoid any dangerous mistakes.

Why should you use small containers when transporting chemicals?

To reduce the risk of spills and accidents

How do you clean up a liquid spill?

Use appropriate absorbent materials and follow lab cleanup procedures.

Why should you pick up a reagent bottle with your hand over the label?

To protect the label from damage in case of spills.

How do you mix an acid & water?

Always add acid to water, never the reverse, to prevent violent reactions.

What should you look for prior to using a Bunsen burner?

Check for gas leaks and ensure the burner and tubing are in good condition

If you are using a match, when should you turn on the gas valve on the burner?

After the match is lit, to prevent gas buildup

Where should you stand when lighting a burner?

Stand back and to the side to avoid accidents.

How should you light a burner with a match?

Light the match first, then turn on the gas and bring the match to the burner.

If your flame sputters or goes out, what should you do?

Turn off the gas immediately and check for issues before relighting.

What should you do if you smell gas?

Turn off the gas and ventilate the area immediately.

How do you carry a heated object?

Use tongs or heat-resistant gloves.

Is it safe to heat a sealed container?

No, it can cause the container to explode due to pressure buildup.

Why must you check glass for stars or cracks before heating?

Cracks can cause the glass to shatter when heated.

How do you heat volatile or flammable chemicals?

Use a water bath instead of an open flame to prevent ignition.

Why do we not use mercury thermometers?

Mercury is toxic and poses a health risk if the thermometer breaks.

How do we clean up a broken thermometer?

Use a mercury spill kit if it contains mercury, otherwise follow lab protocols.

Before using a thermometer for a specific job, what should you know?

Ensure it is rated for the temperature range you will be working with.

What types of shoes are appropriate for the lab?

Closed-toe shoes to protect your feet from spills.

Describe the types of clothing you should wear on lab days.

Wear long sleeves, pants, and avoid loose clothing; tie back long hair.

Why must contacts be removed before doing a lab?

Chemicals can get trapped under them and cause damage to your eyes.

Why must safety goggles be worn the entire time you are present in the lab?

To protect your eyes from chemical splashes.

Why must watches and jewelry be removed prior to a lab?

They can trap chemicals against your skin or be damaged.

When should gloves be worn in the lab?

When handling chemicals to protect your skin.

Why can’t you eat, drink or put makeup on in the lab?

To avoid ingesting or exposing yourself to hazardous chemicals.

What is a safe way to read a burette that is above eye level?

Use a stool or lower the burette to eye level to prevent spills.

Where should you keep personal belongings that you take into the lab?

Store them away from the work area to avoid contamination.

How do you extinguish a small flame in a container (i.e., beaker)?

Cover it with a lid to smother the flame.

What should you do if you have a larger fire?

Use a fire extinguisher or evacuate and call for emergency help.

What two methods can be used to put out a clothing fire?

Use a fire blanket or safety shower.