Studied by 304 people
What are the appropriate actions to take in the event of a spill?
Contaminated clothing must be removed and treated as hazardous waste
use a spill pillow to absorb liquids with nontoxic vapors
if splashed with large quantity of a chemical, use shower immediately
if solid is spilled, wash and scrape off, then wash with water
eyewashes should be used for at least 15 minutes
contaminated clothing must be.....
removed and treated as hazardous waste
use a spill pillow to...
absorb liquids with nontoxic vapors
if splashed with large quantity of a chemical...
use shower immediately
if solid is spilled....
wash and scrape off, then wash with water
eyewashes should be use for…
at least 15 minutes
What are the four key steps for responding to a spill? (ECIM)
Evacuate- large spills/hazardous
communicate: notify an instructor or stock staff of location and contents
isolate: contain spill with pillows
mitigate: clean up spill, instructor decides if you can clean it up
What are the two steps when you are on fire?
stop, drop and roll; wrap the person in a fire blanket
How do you use a fire extinguisher? (PASS)
PASS
Pull: the safety pin
Aim: base of the fire
Squeeze: handle to begin discharge
Sweep: discharge back and forth
Match the part of the fire tetrahedron with the way to remove it: heat, oxygen, chemical chain reaction, fuel
heat: pour water
oxygen: carbon dioxide fire extinguisher blanket
chemical chain reaction: halon fire extinguisher
fuel: minimize flammable solvents
Match fire class with their fuel for the fire:(A,B,C,D)
A: paper, clothing plastics
B: oil, organic solvents, gasoline
C: hot plates, computers
D: reactive metals (ie sodium or lithium)
Facts about fire:
Water cannot be used to extinguish a class __ fire
water cannot be used to extinguish a class D fire
Facts about fire: Removing heat keeps the __ from vaporizing
removing heat keeps the fuel from vaporizing
facts about fire: The fuels must be __ to burn
the fuels must be vaporized to burn
Which of the following are true about bleach?
Nitrile gloves have a __ min breakthrough time for bleach
Bleach is a weak reducing agent
Bleach can cause severe ___ burns and __ damage
If a significant amount of ___ is spilled on you, get into the ___ immediately
Bleach forms poisonous chlorine and chloramine gas when combined with ___
nitrile gloves have a 480 min breakthrough time for bleach
bleach can cause sever skin burns and eye damage
if a significant amount of bleach is spilled on you, get into the shower immediately
bleach forms poisonous chlorine and chloramine gas when combined with ammonia
What percentage of known chemicals have safety data sheets?
0.1%
Who creates SDS?
chemical suppliers
What GHS components are incorporated in SDS?
pictograms
signal words
hazard ratings
hazard statements
precautionary statements
SDS is written for a (professional or industrial) setting, because of this, chemical hazards and personal protective equipment requirements may be (under or overstated).
SDS is written for an indurstial setting, because of this, chemical hazards and personal protective equipment requirements may be overstated.
Rearrange these steps for using SDS:
look at the procedures for safe handling
compare label info to ensure you have right SDS
determine hazard class
compare label info to ensure you have right SDS
determine hazard class
look at the procedures for safe handling
What should be done while handling a corrrosive?
if exposed…
discard __ after contamination of taking off
wear __, , __, & __,
carry bottles in __ __
use in the fume hood if the __ is a __ hazard
long or short clothing?
___ -shedding closed toed shoes
know the location of the __ stations
if exposed wash off skin immediately
discard gloves after contamination of taking off
wear gloves, goggles, and lab coat
carry bottles in secondary containers
use in the fume hood if the corrosive is an inhalant hazard
long clothing water-shedding closed toed shoes
know the location of the eyewash stations
random error (pick two):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
measured by calculating standard deviation
reduced by using a best fit line
instrumental error (pick two):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
inaccurate calibration of pH probe
light source on spectrometer dims over time
methodological error (pick two):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
consistently reading buret volume by looking up at liquid level
using graduated cylinder instead of volumetric flask to make standard deviations
systematic error (pick one):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
eliminated by good experimental methods, more than 1 calibration step
gross error (pick two):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
causes outlier that can be determined by “Q-test”
result of equipment failure
personal error (pick one):
reduced by using a best fit line
failure to read the last sig figs
inaccurate calibration of pH probe
result of equipment failure
consistently reading buret volume by looking up at liquid level
light source on spectrometer dims over time
causes outlier than can be determined by “Q-test”
measured by calculating standard deviation
eliminated methods, more then 1 calibration step
using graduated cylinder instead of volumetric flask to make standard deviations
failure to read the last sig figs from a buret
Which of the following play significant roles in the extent of injury or harm when exposed to a hazardous chemical?
atmospheric pressure
relative humidity
availability of safety equipment
the amount of chemical one is exposed to
the amount of time one is exposed to the chemical
how the chemical entered the body
the amount of chemical one is exposed to
the amount of time one is exposed to the chemical
how the chemical entered the body
match to minimize exposure:
ingestion, eye exposure, inhalation, skin exposure, injection:
cap flasks containing volatile liquids
clean surfaces, wear gloves and lab coat
do not put anything in your mouth that’s been in the lab
always wear goggles
use dustpan and broom to clean up broken glass
ingestion: do not put anything in your mouth that’s been in the lab
eye exposure: always wear goggles
inhalation: cap flasks containing volatile liquids
skin exposure: clean surfaces, wear gloves and lab coat
injection: use dustpan and broom to clean up broken glass
match the airborne particle with its description:
mists, fumes, dusts, smoke, nanoparticles
tiny liquid droplets
solid particles suspended in the air
colloidal suspension of liquid particles in the air
ultra fine homogenous particles
mixture of dry particles and drops of liquid
mists: tiny liquid droplets
dusts: solid particles suspended in the air
fumes: colloidal suspension of liquid particles in the air
nanoparticles: ultra fine homogenous particles
smoke: mixture of dry particles and drops of liquid
What are parts of the design of laboratory ventilation? (ie: fume hoods and hallways)
lab air leaves through the fume hoods
air enters the labs through heating/cooling ducks and hallway air
hallway air flows into the lab
Wear safety [1], not safety glasses, and lab aprons at all times. Wear prescription eye glasses underneath goggles
goggles
Wear clothing providing [2] protection. Shorts, Capri pants, sandals, slip on shoes, minis, and bare stomach, shoulders, or backs are not allowed in the labs.
maximum
Conduct myself in a mature fashion. Excessive noise or [3] behaviors are NOT permitted.
disruptive
Note the exact location of all [4] and learn its proper use.
safety equipment
Perform reactions using (or evolving) noxious or highly combustible chemicals in a [5].
fume hood
Report and [6] all spills immediately.
clean up
[7] from eating, drinking, smoking, or chewing gum in lab.
refrain
[8] of any cracked or broken glassware.
dispose
Extinguish all flames or ignition sources when using [9] and/or volatile chemicals.
flammable
Place all left‑over chemicals in the appropriate collection bottles in the hood. Do NOT dump chemicals into the [10].
sink or trash
Perform only supervised and authorized experiments in lab. An [11] must be present at all times and all procedures must be followed.
instructor
Use tongs or protective gloves to handle [12] objects.
hot
Add concentrated [13] slowly to water while stirring when diluting - NEVER the reverse!
acid
Use [14] procedures and precautions when inserting glass tubing into a rubber stopper.
correct
Properly label all chemical containers and [15] labels before using chemicals.
read
Store all book bags, purses, coats, etc., in [16] areas to avoid clutter
designated
I will [17] my workspace and wash hands frequently during lab and thoroughly before leaving lab.
clean
Think before acting and use [18] judgement and care in the lab.
good
[19] report all injuries to the instructor no matter how small the injury appears.
immediately
What is the most appropriate action if a chemical has just splashed on a person's face in lab?
wash face without removing goggles
If large portions of a person's body are exposed to harmful chemicals, what should be done?
use safety shower
What is the minimum amount of time an area of a person's body that has been exposed to harmful chemicals should be washed? (in minutes)
15 minutes
What should be done...
in case of a fire? (ENM)
if the fire alarm sounds (SUE)
…if an accident occurs? (NADS)
…in case of a fire? (ENM)
evaluate the situation
notify the lab instructor
move away from the fire
…if the fire alarm sounds? (SUE)
stop chemical reactions and lower hood sashes
unplug electrical equipment
evacuate the building by taking the stairs
…if an accident occurs? (NADS)
notify the lab instructor
act quickly
do not panic
seek medical attention
When should gloves be worn?
working on somputers
outside of lab
handking toxic or corrosive chemicals
upon first entering the lab
handling toxic or corrosive chemicals
What should you do when working with a heat source?
always assume that glassware and metal objects are hot
utilize a fume hood
do nothing
all of these
all of these
What should you do when working with a volatile chemical?
work near a heat source
mix it with oxidizing agents
work in the fume hood
all of these
work in the fume hood (mixing volatile chemical with oxidizing agents is highly hazardous)
What should you do when working with a bottle containing a chemical?
never assume that the cap is tightened
all of these
hold the bottle with the label in the palm of your hand
grasp the bottle firmly
all of these
Before coming to lab, which ones should you do?
eat food
read and understand experimental procedures and safety precautions
dress properly
all of these
Which of the following is NOT allowed in lab?
food
drink
eye glasses
mixing chemicals without specific instruction from the lab instructor
cell phones
students who are not enrolled in the lab section
open flame
backpacks
drinking water (or anything else)
food
drink
students who are not enrolled in the lab section
mixing chemicals without specific instruction form the lab instructor
open flame
What should be worn in the laboratory?
yoga pants
long pants
closed toe water shedding shoes
tank top shirt
goggles
bare back dress
capri pants
sandals
lab coats
long pants
closed toad water shedding shoes
goggles
lab coat
What should a student locate when entering lab?
fire extinguisher
safety shower
stairwells
eye wash stations
a ________ error is created by using the wrong indicator for an acid-base titration
what category of error is this in?
methodological; systematic
a ______ error occurs when an experimenter records only even numbers for the last digit of buret volumes.
what category of error is this in?
personal; systematic
the three types of systematic errors are ______ , ______ and ______
methodological, personal, instrumental
A _____ error is caused by an experimenter's carelessness or equipment failure.
gross
a ______ (or indeterminate) error is caused by uncontrollable fluctuations in variables that affect experimental results.
a random
a ______ error results when a spectrometer drifts away from calibrated settings.
what category of error is this in?
instrumental; systematic
Fire extinguishers are located by...
each door of the lab
Sodium bicarbonate and Solusorb
what is it inside of?
location?
use of these chemicals?
inside of: buckets
located: in front of the lab
to neutralize/absorb chemical spills on the floor or lab tables
where are first-aid kits located?
in the stock room
Whats is the function of each of the following items inside of the spill kit?
absorbent barrier
flattened absorbent barriers
splash goggles
sodium bicarbonate
absorbent barrier to collect strong liquids and acids
flattened absorbent barriers to clean the rest of the spill
splash goggles for more coverage
sodium bicarbonate is basic so it can neutralize acids
Water is used by firefighters to control heat inside of a burning building. As the water turns to steam, it absorbs heat from the fire. What is the term for the energy required to turn water to steam?
liquid to gas
evaporation
Fill in the blank for each fire extinguishing method:
put a beaker over the candle to remove all __
blow the flame out to disrupt the __ __ reaction by disporting the __ to __ ratio
light a match and place it in the __. the back (lit or unlit) end of the top edge should rest on the edge of the crucible
squirt the flame out with a small squeeze bottle of __.
oxygen
chemical chain: fuel to oxygen
crucible
water
whats a corrosive do?
destroying other substances as they cause a chemical reaction
How was the sponge able to be corroded by the strong acid?
sponges are carbon based compounds
How does this relate to your skin's composition and corrosive safety?
human skin is made of cells in which membranes are composed of carbohydrates, which makes us carbon-based (organic) compounds
What does the “fire: GHS symbol mean?
flammable (ignites and burns)
what does the "skull and cross bones" GHS symbol stand for?
toxic (death via short exposure or small amounts)
what does the "gas tank" GHS symbol stand for?
compressed gas
What does the "O with fire" GHS symbol stand for?
oxidizing (fire caused by increasing concentration of oxygen in the air)
What does the "two flasks pouring on a hand and a table" GHS stand for?
corrosive (destroys living tissue on skin)
what does the "explosion" GHS symbol stand stand for?
explosive
what does the "dead fish in the lake"GHS symbol stand for?
environment (damage to the aquatic environment)
What does the "exclamation mark" GHS symbol stand for?
irritant; skin sensitizer (less serious health effects)
what does the "man with a star on his chest" GHS symbol stand for?
Health Hazard (serious health effects)
Exposure routes: You are done pumping gas and pulling the nozzle out of the car's tank but the gas continues to flow spraying you in the face. Your eyes start to burn and you have to remove your contacts.
is this an instance of: inhalation, skin or eye absorption, ingestion, or injection?
skin or eye absorption
Exposure routes: You choose a beaker without realizing it has a small star crack in the bottom. The beaker is filled halfway with methanol and placed on the hotplate which is turned on to heat the solution. The beaker shatters as you pick it up, cutting your hand.
is this an instance of: inhalation, skin or eye absorption, ingestion, or injection?
injection
Exposure routes: You are distracted when you enter the lab and forget to cover your laptop keyboard with plastic wrap. Later that day you are at the library studying and you realize a solid is on your trackpad. You lick your finger to wet the trackpad in an attempt to remove the solid. It doesn't come off the first time, so you lick the finger again. Your mouth becomes numb.
is this an instance of: inhalation, skin or eye absorption, ingestion, or injection?
ingestion
It's your turn to clean the bathroom at the apartment. You start out using ammonia, but the smell is terrible, so you switch to bleach without washing away all the ammonia. Pretty soon you eyes are watering and you are coughing badly.
is this an instance of: inhalation, skin or eye absorption, ingestion, or injection?
inhalation
What type if eye protection provides the best protection against a chemical splash?
chemical splash goggles
How do you quickly assess your planned procedure? (RAMP)
Recognize the hazard of acid to the eyes
asses procedure, their knowledge and exposure probability
minimize risk of exposure by wearing goggles
prepare for emergencies by location eyewash station
Which is the more hazardous, warning or danger?
Danger
what would each of the following GHS symbol names fit into the NFPA Diamond (blue= health; red= flamability; yellow= instability; white= special; or none)?
toxicity
environment
oxidizer
health hazard
flammable
corrosive
irritant
compressed gas
explosive
health: toxicity, health hazard, corrosive, explosive
flammability: flammable
instability: irritant
special hazards: oxidizer
none: environmental, compressed gas
Note 
Flashcard (22)