CHEM 212--Quiz 1: Safety Review Questions with Verified Answers
In case of accidental contact with chemicals, how Sign prohibiting food and drink - ANSWER -
long should the eyes be flushed at the eyewash Personal protective equipment (PPE) sign
station? Chemical storage signs
Safety equipment signs
30 minutes Sign prohibiting food and drink
5 minutes
15 minutes
Until the irritation is gone - ANSWER -15 *****What is the main precaution to take if a Gas
minutes Cylinder sign is present in the lab?
Visually check that the gas cylinder is restrained
Move to the safety shower if you spill hazardous but keep a safe distance from it.
chemicals on your ________Stand under the Remove the strap from around the gas cylinder to
shower and _________ the lever. Remove use it in the lab.
clothing and continue flushing the area for Test out the regulator on the gas cylinder to
_________ - ANSWER -skin or make sure it is working properly.
clothing...pull...15 minutes Open the valve on the gas cylinder periodically to
release pressure. - ANSWER -Visually
check that the gas cylinder is restrained but keep
Identify the equipment best suited for a safe distance from it.
extinguishing each type of fire.
small benchtop fire _________
large fire on floor __________ Identify the step that is NOT recommended when
clothing fire _________ - ANSWER - responding to an emergency.
Overturned beaker...fire extinguisher...fire
blanket Proceed calmly and listen for instructions.
Turn off equipment such as Bunsen burners and
gas jets.
Identify the precautions to take with exits in the Alert your instructor.
lab. Gather your belongings. - ANSWER -
Gather your belongings.
Locate the exits prior to the start of lab.
Keep the exit door locked at all times.
Make sure lab windows are always open. What is the first step for response to an
Do not block a door with an EXIT sign. - emergency situation?
ANSWER -Locate the exits prior to the start
of lab. Discuss the situation with the other students until
Do not block a door with an EXIT sign. everyone agrees on what to do.
Run outside the building as quickly as possible
and call 911.
Which signs are typically posted in areas of Remain calm and quiet, gather information, and
active lab work? assess the situation.
Yell for help and assist with the evacuation of the
Personal protective equipment (PPE) sign lab. - ANSWER -Remain calm and quiet,
Chemical storage signs gather information, and assess the situation.
Safety equipment signs
1/6
, CHEM 212--Quiz 1: Safety Review Questions with Verified Answers
diamond - ANSWER -A (blue)-- health
When an alarm sounds in the laboratory, it is B (red)-- flammability
important to respond _________ and remain C (yellow)-- reactivity
_________. Listen for any other instructions, turn D (white)-- special hazards
off any _________ in use, and be prepared to
leave immediately. - ANSWER -
calmly...quiet...equipment ****Most chemicals can be cleaned up with a
general spill kit, but a few chemicals require
specialized spill procedures. For each substance
In lab, you may need to evaluate the odor or listed, determine whether a general spill kit is
smell of a chemical. sufficient or if a specialized spill kit is needed.
What is the best way to smell a chemical mercury _________
sample? phosphoric acid ________
methanol ________
Hold the sample under your nose and slowly hydrofluoric acid ________
sniff. acetone _______ - ANSWER -mercury--
Put your head in a fume hood as you heat the special
sample in it. phosphoric acid-- special
Use your hand to gently waft the smell toward methanol-- general
you. hydrofluoric acid-- special
Vigorously shake the sample until the smell acetone-- general
travels to you. - ANSWER -Use your hand
to gently waft the smell toward you.
How should spill cleaning materials be
discarded?
A student removes a chemical sample from a
reagent bottle to be used in an experiment. What Discard all components in the broken glass
should he do with any excess chemical container.
remaining from this sample after the experiment Leave them in the fume hood for the instructor.
is complete? Rinse the cleaning materials in the sink, then
place them in the trash can.
Conduct a second trial of the experiment with the Seal in a labeled plastic bag, then place in the
excess chemical. solid waste container. - ANSWER -Seal in a
Clean a spatula thoroughly, then use it to add the labeled plastic bag, then place in the solid waste
chemical back into the reagent bottle. container.
Discard the chemical down the sink under
running water.
Check and see if anyone else can use the Fill in the words to complete each step in liquid
chemical. If not, discard in the proper waste spill cleanup.
container. - ANSWER -Check and see if
anyone else can use the chemical. If not, discard 1. Surround the area with _________, then cover
in the proper waste container. the spill.
2. Scoop up the material and place in a
________
Using the letters on the image, identify the 3. Place the bagged waste in a _________
significance of each section on the NFPA 4. Wipe down the area with _________ -
2/6
In case of accidental contact with chemicals, how Sign prohibiting food and drink - ANSWER -
long should the eyes be flushed at the eyewash Personal protective equipment (PPE) sign
station? Chemical storage signs
Safety equipment signs
30 minutes Sign prohibiting food and drink
5 minutes
15 minutes
Until the irritation is gone - ANSWER -15 *****What is the main precaution to take if a Gas
minutes Cylinder sign is present in the lab?
Visually check that the gas cylinder is restrained
Move to the safety shower if you spill hazardous but keep a safe distance from it.
chemicals on your ________Stand under the Remove the strap from around the gas cylinder to
shower and _________ the lever. Remove use it in the lab.
clothing and continue flushing the area for Test out the regulator on the gas cylinder to
_________ - ANSWER -skin or make sure it is working properly.
clothing...pull...15 minutes Open the valve on the gas cylinder periodically to
release pressure. - ANSWER -Visually
check that the gas cylinder is restrained but keep
Identify the equipment best suited for a safe distance from it.
extinguishing each type of fire.
small benchtop fire _________
large fire on floor __________ Identify the step that is NOT recommended when
clothing fire _________ - ANSWER - responding to an emergency.
Overturned beaker...fire extinguisher...fire
blanket Proceed calmly and listen for instructions.
Turn off equipment such as Bunsen burners and
gas jets.
Identify the precautions to take with exits in the Alert your instructor.
lab. Gather your belongings. - ANSWER -
Gather your belongings.
Locate the exits prior to the start of lab.
Keep the exit door locked at all times.
Make sure lab windows are always open. What is the first step for response to an
Do not block a door with an EXIT sign. - emergency situation?
ANSWER -Locate the exits prior to the start
of lab. Discuss the situation with the other students until
Do not block a door with an EXIT sign. everyone agrees on what to do.
Run outside the building as quickly as possible
and call 911.
Which signs are typically posted in areas of Remain calm and quiet, gather information, and
active lab work? assess the situation.
Yell for help and assist with the evacuation of the
Personal protective equipment (PPE) sign lab. - ANSWER -Remain calm and quiet,
Chemical storage signs gather information, and assess the situation.
Safety equipment signs
1/6
, CHEM 212--Quiz 1: Safety Review Questions with Verified Answers
diamond - ANSWER -A (blue)-- health
When an alarm sounds in the laboratory, it is B (red)-- flammability
important to respond _________ and remain C (yellow)-- reactivity
_________. Listen for any other instructions, turn D (white)-- special hazards
off any _________ in use, and be prepared to
leave immediately. - ANSWER -
calmly...quiet...equipment ****Most chemicals can be cleaned up with a
general spill kit, but a few chemicals require
specialized spill procedures. For each substance
In lab, you may need to evaluate the odor or listed, determine whether a general spill kit is
smell of a chemical. sufficient or if a specialized spill kit is needed.
What is the best way to smell a chemical mercury _________
sample? phosphoric acid ________
methanol ________
Hold the sample under your nose and slowly hydrofluoric acid ________
sniff. acetone _______ - ANSWER -mercury--
Put your head in a fume hood as you heat the special
sample in it. phosphoric acid-- special
Use your hand to gently waft the smell toward methanol-- general
you. hydrofluoric acid-- special
Vigorously shake the sample until the smell acetone-- general
travels to you. - ANSWER -Use your hand
to gently waft the smell toward you.
How should spill cleaning materials be
discarded?
A student removes a chemical sample from a
reagent bottle to be used in an experiment. What Discard all components in the broken glass
should he do with any excess chemical container.
remaining from this sample after the experiment Leave them in the fume hood for the instructor.
is complete? Rinse the cleaning materials in the sink, then
place them in the trash can.
Conduct a second trial of the experiment with the Seal in a labeled plastic bag, then place in the
excess chemical. solid waste container. - ANSWER -Seal in a
Clean a spatula thoroughly, then use it to add the labeled plastic bag, then place in the solid waste
chemical back into the reagent bottle. container.
Discard the chemical down the sink under
running water.
Check and see if anyone else can use the Fill in the words to complete each step in liquid
chemical. If not, discard in the proper waste spill cleanup.
container. - ANSWER -Check and see if
anyone else can use the chemical. If not, discard 1. Surround the area with _________, then cover
in the proper waste container. the spill.
2. Scoop up the material and place in a
________
Using the letters on the image, identify the 3. Place the bagged waste in a _________
significance of each section on the NFPA 4. Wipe down the area with _________ -
2/6
