In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station?
30 minutes
5 minutes
15 minutes
Until the irritation is gone
answer
15 minutes
question
Move to the safety shower if you spill hazardous chemicals on your ________Stand under the shower and _________ the lever. Remove clothing and continue flushing the area for _________
answer
skin or clothing...pull...15 minutes
question
Identify the equipment best suited for extinguishing each type of fire.
small benchtop fire _________
large fire on floor __________
clothing fire _________
Identify the precautions to take with exits in the lab.
Locate the exits prior to the start of lab.
Keep the exit door locked at all times.
Make sure lab windows are always open.
Do not block a door with an EXIT sign.
answer
Locate the exits prior to the start of lab.
Do not block a door with an EXIT sign.
question
Which signs are typically posted in areas of active lab work?
Personal protective equipment (PPE) sign
Chemical storage signs
Safety equipment signs
Sign prohibiting food and drink
answer
Personal protective equipment (PPE) sign
Chemical storage signs
Safety equipment signs
Sign prohibiting food and drink
question
*****What is the main precaution to take if a Gas Cylinder sign is present in the lab?
Visually check that the gas cylinder is restrained but keep a safe distance from it.
Remove the strap from around the gas cylinder to use it 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.
answer
Visually check that the gas cylinder is restrained but keep a safe distance from it.
question
Identify the step that is NOT recommended when responding to an emergency.
Proceed calmly and listen for instructions.
Turn off equipment such as Bunsen burners and gas jets.
Alert your instructor.
Gather your belongings.
answer
Gather your belongings.
question
What is the first step for response to an emergency situation?
Discuss the situation with the other students until everyone agrees on what to do.
Run outside the building as quickly as possible and call 911.
Remain calm and quiet, gather information, and assess the situation.
Yell for help and assist with the evacuation of the lab.
answer
Remain calm and quiet, gather information, and assess the situation.
question
When an alarm sounds in the laboratory, it is important to respond _________ and remain _________. Listen for any other instructions, turn off any _________ in use, and be prepared to leave immediately.
answer
calmly...quiet...equipment
question
In lab, you may need to evaluate the odor or smell of a chemical.
What is the best way to smell a chemical sample?
Hold the sample under your nose and slowly sniff.
Put your head in a fume hood as you heat the sample in it.
Use your hand to gently waft the smell toward you.
Vigorously shake the sample until the smell travels to you.
answer
Use your hand to gently waft the smell toward you.
question
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?
Conduct a second trial of the experiment with the excess chemical.
Clean a spatula thoroughly, then use it to add the chemical back into the reagent bottle.
Discard the chemical down the sink under running water.
Check and see if anyone else can use the chemical. If not, discard in the proper waste container.
answer
Check and see if anyone else can use the chemical. If not, discard in the proper waste container.
question
Using the letters on the image, identify the significance of each section on the NFPA diamond
answer
A (blue)-- health
B (red)-- flammability
C (yellow)-- reactivity
D (white)-- special hazards
question
****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.
mercury _________
phosphoric acid ________
methanol ________
hydrofluoric acid ________
acetone _______
answer
mercury-- special
phosphoric acid-- special
methanol-- general
hydrofluoric acid-- special
acetone-- general
question
How should spill cleaning materials be discarded?
Discard all components in the broken glass container.
Leave them in the fume hood for the instructor.
Rinse the cleaning materials in the sink, then place them in the trash can.
Seal in a labeled plastic bag, then place in the solid waste container.
answer
Seal in a labeled plastic bag, then place in the solid waste container.
question
Fill in the words to complete each step in liquid spill cleanup.
1. Surround the area with _________, then cover the spill.
2. Scoop up the material and place in a ________
3. Place the bagged waste in a _________
4. Wipe down the area with _________
answer
...absorbent material...
...plastic bag...
...solid waste container...
...detergent and water...
question
Review the Safety Data Sheet (SDS) for potassium hydroxide, then identify the best course of action for each type of chemical exposure.
If swallowed ________
In case of skin contact _________
If inhaled _________
In case of eye contact _________
answer
If swallowed-- Rinse mouth with water.
In case of skin contact-- Take off any contaminated clothing and rinse thoroughly
If inhaled-- Move person to fresh air
In case of eye contact-- Rinse with water for 15 minutes.
question
When should lab participants look at the Safety Data Sheet (SDS) of a substance?
After completing work with the substance
Before using the substance
While working with the substance in lab
Only if the substance is perceived to be dangerous
answer
Before using the substance
question
What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?
Personal protection and first aid recommendations
Identification and description of substance
Hazard warnings
Literature examples of use of the substance
Handling, storage, and reactivity information
answer
Personal protection and first aid recommendations
Identification and description of substance
Hazard warnings
Handling, storage, and reactivity information
question
If you drop or break glassware in lab, first ________. Then, _______
Finally, place all that material into the ________
answer
get thick gloves or a dustpan...carefully collect all the broken glassware...broken glass container
question
Using the letters on the image, identify each component of the liquid waste set-up
****Determine where to dispose of each type of waste.
unused solid reagent _________
syringe tips ________
broken flask _________
titrant solution ________
answer
unused solid reagent -- Solid waste container
syringe tips-- Box lined with puncture resistant bag
broken flask-- Sharps container
titrant solution-- Nalgene bottle with cap
question
Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?
The chemical Safety Data Sheets
Your instructor's directions
The chemical bottle labels
Your lab partner
answer
Your lab partner
question
What information does not need to be included a chemical waste label?
A description of the experiment the chemicals were used for
Names of the chemical compounds present in the container
Relative amounts of chemical compounds in the container
The date the waste container was filled completely
answer
A description of the experiment the chemicals were used for
question
What are the best practices for safely handling waste in the lab?
Always wear appropriate Personal Protective Equipment.
Remove gloves for better manipulation of the waste containers.
Place any paper towels from the clean-up in the trash.
Check labels or instructions before any disposal.
answer
Always wear appropriate Personal Protective Equipment.
Check labels or instructions before any disposal.
question
When should you start a new chemical waste container in the lab?
When you accidentally spill chemicals down the side of the current container
When you need to dispose of another chemical that is compatible with chemicals in the current container
When the contents of the current container completely fill the container to the brim
When the contents of the current container are a couple inches below the brim of the container
answer
When the contents of the current container are a couple inches below the brim of the container
question
Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, ________, and then, _________. Then insert _________ between the interior edge of the second glove and the skin, and remove the second glove.
answer
grasp the exterior of one glove with a gloved hand... peel off the first glove...a bare finger
question
Determine the best way to deal with each of the following items that may dangle into the way during lab work.
flowy sleeves ________
loose bracelets ________
long necklaces _________
long earrings ________
long hair ________
answer
flowy sleeves--Tie back or secure
loose bracelets-- Remove
long necklaces--Remove
long earrings--Remove
long hair--Tie back or secure
question
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 picking up a buret, an unknown solution left by a previous solution drips onto your hand. ________
While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. ________
While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. _________
While checking on a stirring solution, the solution splashes up towards your face. _________
answer
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
While checking on a stirring solution, the solution splashes up towards your face. --Goggles
question
What should you do every time before you leave the lab?
Remove your gloves.
Wash your hands.
Remove your labcoat, if you are wearing one.
Turn off the lights.
answer
Remove your gloves.
Wash your hands.
Remove your labcoat, if you are wearing one.
question
****Determine which items of personal protective equipment (PPE) you will likely use in a general chemistry lab.
answer
face shield
(latex) gloves
question
Determine when to put on disposable gloves for work in the lab.
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
answer
Before handling any glassware or chemicals for the experiment
question
Determine the safest option in the lab if you need your vision to be corrected.
Wear safety goggles while working and switch to corrective glasses when you need to read something
Wear your corrective glasses or lenses as normal for the whole experiment
Wear safety goggles without any corrective lenses 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
answer
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
question
Determine when you should remove your goggles in the lab room.
When everyone in the room is done handling any chemicals or glassware
Whenever you need to lean in close to get a volume reading
When you have finished cleaning up your chemicals and glassware
Whenever your goggles become foggy or uncomfortable
answer
When everyone in the room is done handling any chemicals or glassware
question
Read each statement regarding food and beverages in the lab and determine if each is true or false.
Chewing gum is okay in the lab as long as you don't blow bubbles. _____
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. _______
answer
Chewing gum is okay in the lab as long as you don't blow bubbles. False
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
question
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 lab injury appears different from injuries the student has experienced previously.
The instructor must be informed of all laboratory injuries.
The instructor should be alerted only if the injury involves broken skin.
answer
The instructor must be informed of all laboratory injuries.
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