Chem 1LC Safety test

What are the appropriate actions to take in the event of a spill? \n 1. contaminated clothing must be..... \n 2. use a spill pillow to... \n 3. if splashed with large quantity of a chemical... \n 4. if solid is spilled.... \n 5. eyewashes should be use for at least 15 minutes

\-contaminated clothing must be removed and treated as hazardous waste \n -use a spill pillow to absorb liquids with nontoxic vapors \n -if splashed with large quantity of a chemical, use shower immediately \n -if solid is spilled wash and scrape off, then wash with water \n -eyewashes should be use for at least 15 minutes

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What are the four key steps for responding to a spill? (ECIM)

Evacuate- large spills/hazardous \n Communicate: notify an instructor or stock staff of location and contents \n Isolate: contain spill with pillows \n 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 \n Pull: the safety pin \n Aim: base of the fire \n Squeeze: handle to begin discharge \n Sweep: discharge back and fourth

Match the part of the fire tetrahedron with the way to remove it: \n heat, oxygen, chemical chain reaction, fuel

heat: pour water \n oxygen: carbon dioxide fire extinguisher blanket \n chemical chain reaction: halon fire extinguisher \n fuel: minimize flammable solvents

Match fire class with their fuelfor the fire: \n (A, B, C, D)

A. Paper, clothing, plastics \n B. Oil, organic solvents, gasoline \n C. Hot plates, computers \n D. Reactive metals (ie: sodium or litium)

Facts about fire \n -Water cannot be used to extinguish a class ___ fire \n -Removing heat keeps the ___ from vaporizing \n -The fuel must be _____ to burn

\-Water cannot be used to extinguish a class D fire \n -Removing heat keeps the fuel from vaporizing \n -The fuel must be vaporized to burn

Which of the following are true about bleach? \n -Nitrile gloves have a ___ min breakthrough time for bleach \n -Bleach is a weak reducing agent \n -Bleach can causes severe ___ burns and ____ damage \n -If a significant amount of ____ is spilled on you, get into the _____ immediately \n -Bleach forms poisonous chlorine and chloramine gas when combined with ____

\-Nitrile gloves have a 480 min breakthrough time for bleach \n -Bleach can causes severe skin burns and eye damage \n -If a significant amount of bleach is spilled on you, get into the shower immediately \n -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 \n signal words \n hazard ratings \n hazard statements \n precautionary statments

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.

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Rearrange these steps for using SDS: \n -Look at the procedures for safe handling \n -compare label info to ensure you have right SDS \n -determine hazard class

1\. compare label info to ensure you have right SDS \n 2. determine hazard class \n 3. Look at the procedures for safe handling

What should be done while handling a corrrosive? \n -if exposed... \n -discard _____ after contamination of taking off \n -wear _____, _____, and _______ \n -carry bottles in _______ _______ \n -use in the fume hood if the ______ is a _______ hazard \n -long or short clothing? ____-shedding closed toed shoes \n -know the location of the ____ stations

\-if exposed wash off skin immediately \n -discard gloves after contamination of taking off \n -wear gloves, goggles, and lab coat \n -carry bottles in secondary containers \n -use in the fume hood if the _corrosive is a inhalant hazard \n -long clothing water-shedding closed toed shoes \n -know the location of the eyewash stations

random error (pick two) \n -reduced by using a best fit line \n -failure to read the last sig figs \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -using graduated cylinder instead of volumetric flask to make standard deviations

random error: \n -measured by calculating standard deviation \n -reduced by using a best fit line,

instrumental error (pick two) \n -reduced by using a best fit line \n -failure to read the last sig figs \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -using graduated cylinder instead of volumetric flask to make standard deviations

instrumental error: \n -inaccurate calibration of pH probe \n -light source on spectrometer dims over time

methodological error (pick two) \n -reduced by using a best fit line \n -failure to read the last sig figs \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -using graduated cylinder instead of volumetric flask to make standard deviations

methodological error: \n -consistently reading buret volume by looking up at liquid level \n -using graduated cylinder instead of volumetric flask to make standard deviations

systematic error (pick one) \n -reduced by using a best fit line \n -failure to read the last sig figs \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -using graduated cylinder instead of volumetric flask to make standard deviations

systematic error: \n -eliminated by good experimental methods, more than 1 calibration step

gross error (pick two) \n -reduced by using a best fit line \n -failure to read the last sig figs \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -using graduated cylinder instead of volumetric flask to make standard deviations

gross error: \n -causes outlier than can be determined by "Q-test" \n -result of equipment failure

personal error (pick one) \n -reduced by using a best fit line \n -failure to read the last sig figs from a buret \n -inaccurate calibration of pH probe \n -result of equipment failure \n -consistently reading buret volume by looking up at liquid level \n -light source on spectrometer dims over time \n -causes outlier than can be determined by "Q-test" \n -measured by calculating standard deviation \n -eliminated by good experimental methods, more than 1 calibration step \n -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? \n -atmospheric pressure \n -relative humidity-availability of safety equipment \n -the amount of chemical one is exposed to \n -the amount of time one is exposed to the chemical \n -how the chemical entered the body

\-the amount of chemical one is exposed to \n -the amount of time one is exposed to the chemical \n -how the chemical entered the body

match to minimize exposure: \n ingestion, eye exposure, inhalation, skin exposure, injection: \n -cap flasks containing volatile liquids \n -clean surfaces, wear gloves and lab coat \n -do not put anything in your mouth thats been in the lab \n -always wear goggles \n -use dustpan and broom to clean up broken glass

ingestion: do not put anything in your mouth thats been in the lab \n eye exposure: always wear goggles \n inhalation: cap flasks containing volatile liquids \n skin exposure: clean surfaces, wear gloves and lab coat \n injection: use dustpan and broom to clean up broken glass

match the airborne particle with its description \n mists, fumes, dusts, smoke, nanoparticles \n -tiny liquid droplets \n -solid particles suspended in the air \n -colloidal suspension of liquid particles in the air \n -ultra fine homogenous partiles \n -mixture of dry particles and drops of liquid

mists-tiny liquid droplets \n dusts-solid particles susended in the air \n fumes-colloidal suspension of liquid particles in the air \n nanoparticles-ultra fine homogenous partiles \n 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 \n -air enters the labs through heating/cooling ducks and hallway air \n -hallway air flows into the lab

1\. Wear safety \[1\], not safety glasses, and lab aprons at all times. \n Wear prescription eye glasses underneath goggles. \n 2. 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.

1\. Goggles \n 2. Maximum

3\. Conduct myself in a mature fashion. Excessive noise or \[3\] behaviors are NOT permitted. \n 4. Note the exact location of all \[4\] and learn its proper use.

3\. disruptive \n 4. safety eqipment

5\. Perform reactions using (or evolving) noxious or highly combustible chemicals in a \[5\]. \n 6. Report and \[6\] all spills immediately.

5\. fume hood \n 6. clean up

\[7\] from eating, drinking, smoking, or chewing gum in lab. \n \[8\] of any cracked or broken glassware.

7\. refrain \n 8. dispose

9\. Extinguish all flames or ignition sources when using \[9\] and/or volatile chemicals. \n 10. Place all left‑over chemicals in the appropriate collection bottles in the hood. Do NOT dump chemicals into the \[10

9\. flammable \n 10. sink or trash

11\. Perform only supervised and authorized experiments in lab. An \[11\] must be present at all times and all procedures must be followed. \n 12. Use tongs or protective gloves to handle \[12\] objects.

11\. instructor \n 12. hot

13\. Add concentrated \[13\] slowly to water while stirring when diluting - NEVER the reverse! \n 14. Use \[14\] procedures and precautions when inserting glass tubing into a rubber stopper.

13\. acid \n 14. correct

15\. Properly label all chemical containers and \[15\] labels before using chemicals. \n 14. Store all book bags, purses, coats, etc., in \[16\] areas to avoid clutter

15\. read \n 16. designated

17\. I will \[17\] my workspace and wash hands frequently during lab and thoroughly before leaving lab. \n 18. Think before acting and use \[18\] judgement and care in the lab. \n 19. \[19\] report all injuries to the instructor no matter how small the injury appears.

17\. Clean \n 18. good \n 19. immediatly

What is the most appropriate action if a chemical has just splashed on a person's face in lab? \n wash ____ (with or without) removing goggles

What is the most appropriate action if a chemical has just splashed on a person's face in lab? \n wash ____ (with or 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... \n 1. ...in case of a fire? (ENM) \n 2. ...if the fire alarm sounds? (SUE) \n 3. ...if an accident occurs? (NADS)

What should be done... \n 1. ...in case of a fire? (ENM) \n -Evaluate the situation \n -Notify the lab instructor \n -Move away from the fire. \n 2. ...if the fire alarm sounds? (SUE) \n -Stop chemical reactions and lower hood sashes \n -Unplug electrical equipment \n -Evacuate the building by taking the stairs. \n 3. ...if an accident occurs? (NADS) \n -Notify the lab instructor. \n -Act quickly. \n -Do not panic. \n -Seek medical attention

When should gloves be worn? \n Group of answer choices \n -working on computers \n -outside of lab \n -handling toxic or corrosive chemicals \n -upon first entering the lab

handling toxic or corrosive chemicals

1\. What should you do when working with a heat source? \n -Always assume that glassware and metal objects are hot \n -Utilize a fume hood \n -do nothing \n -all of these \n 2. What should you do when working with a volatile chemical? \n -work near a heat source \n -mix it with oxidizing agents \n -work in the fume hood \n -all of these \n 3. What should you do when working with a bottle containing a chemical? \n -Never assume that the cap is tightened. \n -All of these \n -Hold the bottle with the label in the palm of your hand. \n -Grasp the bottle firmly

1\. all of these \n 2. work in the fume hood (mixing volatile chemicals with oxidizing agents is highly hazardous lol) \n 3. all of these

Before coming to lab, which ones should you do? \n -eat food \n -read and understand experimental procedures and safety precautions \n -dress properly.

\-eat food \n -read and understand experimental procedures and safety precautions \n -dress properly.

Which of the following is NOT allowed in lab? \n -food \n -drink \n -eye glasses \n -mixing chemicals without specific instruction from the lab instructor \n -cell phones \n -students who are not enrolled in the lab section \n -open flame \n -backpacks

Which of the following is NOT allowed in lab? \n -food \n -drink \n -eye glasses \n -mixing chemicals without specific instruction from the lab instructor \n -cell phones \n -students who are not enrolled in the lab section \n -open flame \n -backpacks

What should be worn in the laboratory? \n -yoga pants \n -long pants \n -closed toe water shedding shoes \n -tank top shirt \n -goggles \n -bare back dress \n -capri pants \n -sandals \n -lab coat

\-long pants \n -closed toed water shedding shoes \n -goggles \n -lab coat

What should a student locate when entering lab? \n -fire extinguisher \n -safety shower \n -Stairwells \n -eye wash stations

\-fire extinguisher \n -safety shower \n -Stairwells \n -eye wash stations

a ________ error is created by using the wrong indicator for an acid-base titration \n -what category of error is this in?

a methodological error is created by using the wrong indicator for an acid-base titration \n -systematic

a ______ error occurs when an experimenter records only even numbers for the last digit of buret volumes. \n -what category of error is this in?

a personal error occurs when an experimenter records only even numbers for the last digit of buret volumes. \n -systematic

the three types of systematic errors are ______ , ______ and ______

methodological, personal, instrumental

A _____ error is caused by an experimenter's carelessness or equipment failure.

random

a ______ (or indeterminate) error is caused by uncontrollable fluctuations in variables that affect experimental results.

a random (or indeterminate) error is caused by uncontrollable fluctuations in variables that affect experimental results.

a ______ error results when a spectrometer drifts away from calibrated settings; \n -what category of error is this in?

an instrumental error results when a spectrometer drifts away from calibrated settings;

fire extinguishers are located by…

each door of the lab

Sodium bicarbonate and Solusorb \n -what is it inside of? \n -location? \n -use of these chemicals?

Sodium bicarbonate and Solusorbs: \n -inside of: buckets \n -located: in the front of the lab \n -neutralize/absorb chemical spills on the floor or lab tables

where are first-aid kits located?

in the stock room