Lab Safety Quiz

in general which characteristics are necessary for a location to be suitable for chemical storage?

-dark -cool -dry

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

The instructor must be informed of all laboratory injuries

How should spill cleaning materials be discarded?

WRONG ANSWER:Leave them in the fume hood for the instructor.

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

Return the bottle to its proper storage location. Close the bottle.

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

your lab partner

Which signs are typically posted in areas of active lab work?

Personal protective equipment (PPE) sign Sign prohibiting food and drink Safety equipment signs Chemical storage signs

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

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

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?

check and see if anyone else can use the chemical. if not discard in the proper waste 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 reagenyt-Solid waste titrant solution-WRONG ANS:BOX LINED WITH PUNCTURE RESISTANT BAG broken flask-WRONG ANS:SHARPS CONTAINER syringe tips-sharps container

In lab, you may need to evaluate the odor or smell of a chemical. What is the best way to smell a chemical sample?

Use your hand to gently waft the smell toward you

what are the best practices for safely handing waste in the lab?

check labels or instructions before any disposal always wear appropriate personal protective equipment

Chaning gloves often will minimize the spread of chemicals. to properly remove gloves, first grasp the exterior of one glove with a gloved hand and then peel off the firs glove then insert a bare finger between the interior edge od the second glove and the skin and remove the second glove

question 26

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

Always wear appropriate Personal Protective Check labels or instructions before any disposal.

Determine when you should remove your goggles in the lab room

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

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

before handing any glassware or chemicals for tge experiment

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-special methanol-general mercury-special acetone-general phosphoric acid-general

Identify the description that applies to the substance represented by each NFPA diamond.

3-0-2 moderately unstable or reactive 2-4-0 has a flash point below room temperature 2-3-0 stable has health risk bt no special hazards 3-0-0-oxy oxidizer, not flammable

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 checking on a stirring solution, the solution splashes up towards your face.-goggles While picking up a buret, an unknown solution left by a previous solution drips onto your hand.-gloves While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor.-closed toe shoes While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench.-lab coat

Identify the step that is not recommended when responding to an emergency.

gather your belongings

Read the Safety Data Sheet (click SDS icon below) of hydrogen peroxide to identify the recommended way to store this substance.

In a tightly closed container in a dry and well-ventilated place

Identify the safety equipment designed to deal with each emergency listed.

fire on person-fire blanket chemicals on clothes-safety shower large fire on the benchtop-fire extinguisher chemical in eyes-eyewash station cuts or minor burns-first aid kit

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

-remove your labcoat if you are wearing one remove your gloves wash your hands

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

before using the substance

Identify the precautions to take with exits in the lab.

Locate the exits prior to the start of lab. Do not block a door with an EXIT sign.

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

Stop the spread of the spill. Soak up any spilled liquid with absorbent material. Pick up large pieces of glass with gloved hands.

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

many organic materials are flammable and could cause a fire

determine where to dispose of each type of waste

titrant solution-nalgene bottle with cap unused solid reagent=solid waste container broken flask-box lined with puncture resistant bag syringe tips- sharps container

If you drop or break glassware in lab, first get thick gloves or dustpan Then, carefully collect all the broken glasswares Finally, place all that material into the broken glass container

question 19

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

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

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

a description of the experiment the chemicals were used for

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

recommendations in case of accidental contact with the chemical-first aid measures chemical name and formula-Identification recommended personal protective equipment (PPE)-exposure controls/personal protective possible dangers and health effects-hazards identification incompatibility-WRONG ANSWER: hazards identification

what is the last step of any spill cleanup procedure?

wipe down the affected area with detergent and water

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

long neklaces-remove long hair-tie back or secure long earrings-remove flowy sleeves-WRONG ANS: REMOVE loose bracelets-remove

how should students prepare to use chemicals in the lab?

- become familiar with the chemicals to be used, including exposure or spill hazards -locate the spill kits and understand how they are used

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

-Being familiar with how safety equipment is used -Understanding where the safety equipment is located -Knowing what safety equipment is available

What is the first step for response to an emergency situation?

Remain calm and quiet, gather information, and assess the situation.

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

Understanding of where to go should an emergency occur Contact information for emergency personnel Location of lab phone and first aid kit location of all exits