Lab Safety Review Quiz - Lab Flow

In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station?

5 minutes

Until the irritation is gone

15 minutes

30 minutes

15 minutes

Under what conditions should a student inform the instructor of a lab injury?

The instructor needs to be alerted only if he or she needs to call 911.

The instructor should be alerted only if the injury involves broken skin.

The instructor should be alerted only if the lab injury appears different from injuries the student has experienced previously.

The instructor must be informed of all laboratory injuries.

The instructor must be informed of all laboratory injuries.

What is the main precaution to take if a Gas Cylinder sign is present in the lab?

Test out the regulator on the gas cylinder to make sure it is working properly.

Open the valve on the gas cylinder periodically to release pressure.

Remove the strap from around the gas cylinder to use it in the lab.

Visually check that the gas cylinder is restrained but keep a safe distance from it

Visually check that the gas cylinder is restrained but keep a safe distance from it

What information is needed in order to be prepared for an emergency?

Select one or more:

Location of lab phone and first aid kit

Contact information for emergency personnel

Understanding of where to go should an emergency occur

Full inventory of all chemicals present in the lab

Location of all exits

Location of lab phone and first aid kit

Contact information for emergency personnel

Understanding of where to go should an emergency occur

Location of all exits

Using the letters on the image, identify the significance of each section on the NFPA diamond.

A = Healthy

B = Flammability

C = Reactivity

D = Special Hazards

What should you do after finishing work with a reagent bottle?

Select one or more:

Close the bottle.

Place the bottle in the Solid Waste container.

Return the bottle to its proper storage location.

Leave the bottle open in case someone else needs it.

Close the bottle.

Return the bottle to its proper storage location.

A student removes a chemical sample from a reagent bottle to be used in an experiment. What should he do with any excess chemical remaining from this sample after the experiment is complete?

Select one:

Check and see if anyone else can use the chemical. If not, discard in the proper waste container.

Conduct a second trial of the experiment with the excess chemical.

Discard the chemical down the sink under running water.

Clean a spatula thoroughly, then use it to add the chemical back into the reagent bottle.

Check and see if anyone else can use the chemical. If not, discard in the proper waste container.

Most laboratory chemical spills are cleaned up in a similar manner, but acid and base spills require an extra step. What is this extra step?

Select one:

Neutralize the spill before cleaning it up.

Be sure to replace the spilled acid or base.

Tell all other lab participants to evacuate the lab as quickly as possible.

Alert the proper authorities about the corrosive chemical waste.

Neutralize the spill before cleaning it up.

Most chemicals can be cleaned up with a general spill kit, but a few chemicals require specialized spill procedures. For each substance listed, determine whether a general spill kit is sufficient or if a specialized spill kit is needed.

hydrofluoric acid

general or special

hydrofluoric acid

methanol

acetone

phosphoric acid

mercury

hydrofluoric acid = special

methanol = general

acetone = general

phosphoric acid = general

mercury = special

How should students prepare to use chemicals in the lab?

Select one or more:

Become familiar with the chemicals to be used, including exposure or spill hazards.

Locate the spill kits and understand how they are used.

Check labels and discard chemicals that are not 100% pure.

Sort the lab chemicals in alphabetical order for quick access.

Become familiar with the chemicals to be used, including exposure or spill hazards.

Locate the spill kits and understand how they are used.

What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?

Select one or more:

Literature examples of use of the substance

Hazard warnings

Identification and description of substance

Handling, storage, and reactivity information

Personal protection and first aid recommendations

Hazard warnings

Identification and description of substance

Handling, storage, and reactivity information

Personal protection and first aid recommendations

When should lab participants look at the Safety Data Sheet (SDS) of a substance?

Select one:

After completing work with the substance

While working with the substance in lab

Before using the substance

Only if the substance is perceived to be dangerous

Before using the substance

Identify the section in which each type of information can be found on a Safety Data Sheet.

incompatibility or reactivity with other chemicals

chemical name and formula

recommended personal protective equipment (PPE)

possible dangers and health effects

recommendations in case of accidental contact with the chemical

incompatibility or reactivity with other chemicals = handling and storage

chemical name and formula = identification

recommended personal protective equipment (PPE) = exposure controls/personal protection

possible dangers and health effects = hazard identification

recommendations in case of accidental contact with the chemical = first aid measures

If you drop or break glassware in lab, first

Then,

Finally, place all that material into the

get thick gloves or dustpan,

carefully collect all the broken glassware

broken glass container

Using the letters on the image, identify each component of the liquid waste set-up.

A = funnel

B = primary container

C = waste label

D = secondary container

Determine where to dispose of each type of waste.

unused solid reagent

syringe tips

broken flask

titrant solution

unused solid reagent = solid waste container

syringe tips = sharps container

broken flask = box lined with puncture resistant bag

titrant solution = Nalgene bottle with cap

Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?

Select one:

Your instructor's directions

The chemical bottle labels

The chemical Safety Data Sheets

Your lab partner

Your lab partner

What information does not need to be included a chemical waste label?

Select one:

Names of the chemical compounds present in the container

The date the waste container was filled completely

A description of the experiment the chemicals were used for

Relative amounts of chemical compounds in the container

A description of the experiment the chemicals were used for

What are the best practices for safely handling waste in the lab?

Select one or more:

Check labels or instructions before any disposal.

Remove gloves for better manipulation of the waste containers.

Always wear appropriate Personal Protective Equipment.

Place any paper towels from the clean-up in the trash.

Check labels or instructions before any disposal.

Always wear appropriate Personal Protective Equipment.

When should you start a new chemical waste container in the lab?

Select one:

When the contents of the current container completely fill the container to the brim

When you need to dispose of another chemical that is compatible with chemicals in the current container

When you accidentally spill chemicals down the side of the current container

When the contents of the current container are a couple inches below the brim of the container

When the contents of the current container are a couple inches below the brim of the container

Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, ___, and then ___. Then first ___ between the interior edge of the second glove and the skin, and remove the second glove.

grasp the exterior of one glove with a gloved hand

peel of the first glove

a bare finger

Determine the best way to deal with each of the following items that may dangle into the way during lab work.

flowy sleeves

long hair

long earrings

long necklaces

loose bracelets

flowy sleeves = tie back or secure

long hair = tie back or secure

long earrings = remove

long necklaces = remove

loose bracelets = remove

Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once.

While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. ___

While picking up a buret, an unknown solution left by a previous solution drips onto your hand. ___

While checking on a stirring solution, the solution splashes up towards your face. ___

While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. ___

lab coat

gloves

goggles

closed-toe shoes

What should you do every time before you leave the lab?

Select one or more:

Wash your hands.

Remove your gloves.

Turn off the lights.

Remove your labcoat, if you are wearing one.

Wash your hands.

Remove your gloves.

Remove your labcoat, if you are wearing one.

Determine when to put on disposable gloves for work in the lab.

Select one:

After cleaning all the glassware for the experiment

Before entering the laboratory room

After setting up all the glassware but before handling chemicals

Before handling any glassware or chemicals for the experiment

Before handling any glassware or chemicals for the experiment

Determine the safest option in the lab if you need your vision to be corrected.

Select one:

Wear safety goggles while working and switch to corrective glasses when you need to read something

Wear safety goggles without any corrective lenses for the whole experiment

Wear your corrective glasses or lenses as normal for the whole experiment

Wear corrective glasses or lenses under your safety goggles for the whole experiment, but always check with your TA or Instructor for your school's policy

Wear corrective glasses or lenses under your safety goggles for the whole experiment, but always check with your TA or Instructor for your school's policy

Determine when you should remove your goggles in the lab room.

Select one:

When you have finished cleaning up your chemicals and glassware

Whenever your goggles become foggy or uncomfortable

Whenever you need to lean in close to get a volume reading

When everyone in the room is done handling any chemicals or glassware

When everyone in the room is done handling any chemicals or glassware

Read each statement regarding food and beverages in the lab and determine if each is true or false.

Tobacco products of all kinds are prohibited in lab.

Beverages are allowed in lab as long as they are in containers with lids.

Food items should not be brought into the lab.

Chewing gum is okay in the lab as long as you don't blow bubbles.

Tobacco products of all kinds are prohibited in lab. = True

Beverages are allowed in lab as long as they are in containers with lids. = False

Food items should not be brought into the lab. = True

Chewing gum is okay in the lab as long as you don't blow bubbles. = False

Why should Bunsen burners not be used when heating organic materials?

Select one:

Organic materials cause Bunsen burners to malfunction.

Many organic materials are flammable and could cause a fire.

Organic materials should never be heated.

Organic materials need more heat than provided by the Bunsen burner.

Many organic materials are flammable and could cause a fire.

All lab participants must remain prepared to use safety equipment in case of emergency. Identify the components of effective preparation.

Select one or more:

Being familiar with how safety equipment is used

Researching alternatives to the safety equipment available in lab

Practicing with safety equipment before the start of each lab session

Knowing what safety equipment is available

Understanding where the safety equipment is located

Being familiar with how safety equipment is used

Knowing what safety equipment is available

Understanding where the safety equipment is located

Move to the safety shower if you spill hazardous chemicals on your ___.

Stand under the shower and ___ the level.

Remove clothing and continue flushing the area for __.

skin or clothing

pull

15 minutes

Which types of signs are posted to convey information about chemical storage?

Select one or more:

Hazard signs such as "Flammable," "Oxidizer," and "Corrosive"

National Fire Protection Association (NFPA) diamond

Gas Cylinder sign

Exit sign

Safety equipment signs such as "Safety Shower" and "Eyewash Station"

Hazard signs such as "Flammable," "Oxidizer," and "Corrosive"

National Fire Protection Association (NFPA) diamond

Gas Cylinder sign

What is generally the best approach when liquid from a large reagent bottle is needed in an experiment?

Select one:

Pour liquids directly from a reagent bottle only when a funnel is placed securely underneath.

Dispense the liquid directly from the reagent bottle whenever it is needed.

Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure.

Insert a pipet into the reagent bottle as many times as needed to get the desired amount of liquid.

Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure.

Which steps are necessary for cleaning a spill involving broken glass?

Select one or more:

Stop the spread of the spill.

Soak up any spilled liquid with absorbent material.

Pick up large pieces of glass with gloved hands.

Wash off the broken glass for recycling.

Stop the spread of the spill.

Soak up any spilled liquid with absorbent material.

Pick up large pieces of glass with gloved hands.

Review the Safety Data Sheet (SDS) (click the SDS icon below) for potassium hydroxide, then identify the best course of action for each type of chemical exposure.

In case of skin contact ___

If swallowed ___

If inhaled ___

In case of eye contact ___

In case of skin contact = Take off any contaminated clothing and rinse thoroughly

If swallowed = Rinse mouth with water

If inhaled = Move person to fresh air

In case of eye contact = Rinse with water for 15 minutes