Questions=new Array(""
,["Introduction","","","SOURCE"]
,["","What elected group’s laws and regulations make laboratory safety a legal requirement in the United States of America?","federal;state;county;local;all of the above*","OSHA/PJ"]
,["","Which of the following describes some key elements of an appropriate safety training program?","safety training must be a continuing process;safety training should be an integral part of the daily activities of laboratory workers;formal safety education should be made as relevant as possible to actual work activities;informal safety training through collegial interactions are valuable ways to exchange safety information, and sustain an atmosphere in which colleagues reinforce each other's good work habits;all of the above*","OSHA/PJ"]
,["","To reduce the probability of accidents:","practice the habit of accident prevention;use personal protective equipment;use the smallest quantity of material necessary;when possible, substitute a less hazardous chemical for a more hazardous one;anticipate the possible consequences of the work you do;all of the above*","ACS/BH"]
,["","Examples of personal protective equipment do NOT include:","goggles and long pants;long-sleeve shirts;lab coats;contact lenses*;all of the above","ACS/BH"]
,["","An accident-prevention program must include:","regular safety inspections;regular monitoring;formal and regular procedures;procedures that ensure proper disposal of waste chemicals;all of the above*","ACS/BH"]
,["","Regular inspection of safety equipment such as eye washes and safety showers must be carried out","every week;once a month*;four times a year;yearly","ACS/BH"]
,["","Pollution prevention is an integral component of waste management practices. Which of the following is not included in the hierarchy of pollution prevention techniques?","source reduction;recycling/reuse/recovery;storing less material on-site*;treatment;land disposal;all of the above","OSHA/PJ"]
,["Section 1. Your Responsibilities","","","ACS/BH"]
,["","Safety in the instructional laboratory is","the responsibility of the professor only;the responsibility of the student only;a shared responsibility**","ACS/BH"]
,["","Who is required to wear eye protection in the laboratory?","students but not professors;all visitors, unless they are present for less than one minute;everyone, but only when performing a chemical operation;everyone**","ACS/BH"]
,["","Accidents often result from:","an indifferent attitude;failure to use common sense;failure to follow instructions;making mistakes;all of the above*","ACS/BH"]
,["","General guidelines for preventing accidents include:","follow all safety instructions carefully;never play tricks or indulge in horseplay in the chemical laboratory;know where the safety equipment is;become familiar with the hazards of the chemicals to be used;become familiar with the hazards of equipment to be used;all of the above*","ACS/BH"]
,["","True or false: Safety regulations require that contact lenses NOT be worn in the laboratory","true;false**","ACS/BH"]
,["","When must special \"blast shields\" be utilized?","when any material is heated to above 350 oC;when working under reduced pressure**;whenever students are enthusiastic;all of the above","ACS/BH"]
,["","Clothing worn in the laboratory should:","offer protection from spashes and spills;be easily removable in case of accident;be at least fire-resistant;all of the above*","ACS/BH"]
,["","Jewelry is a potential safety issue because:","it can be damaged by chemical fumes and spills;chemicals can be trapped under it, in contact with sensitive skin*;it could be stolen","ACS/BH"]
,["","Which of the following types of shoes are recommended by the Americal Chemical Society for general laboratory work?","sandals;cloth-topped \"tennis\" or \"running\" shoes;woven leather shoes;high heels;steel-toed shoes;none of the above*","ACS/BH"]
,["","When using gloves as personal protective equipment, which of the following procedures should be followed? ","wear gloves of a material known to be resistant to permeation by the substances in use;inspect gloves for small holes or tears before use;remove gloves before handling objects such as doorknobs, telephones, pens, and computer keyboards;decontaminate or wash gloves before removing them;replace gloves periodically, depending on the frequency of use;all of the above*","OSHA/PJ"]
,["","Latex gloves","may be reused as long as they are clean;may be reused only if they have not been permeated**;should never be reused","ACS/BH"]
,["","Cloth or leather gloves are appropriate","when working with hazardous chemicals;when working around steam**;never in the laboratory","ACS/BH"]
,["","Four fundamental principles underlie all of the work practices in the chemical laboratory. Which of the following is not one of those principles?","plan ahead;minimize chemical exposure;do not underestimate risks;add ventilation to the lab by opening windows*;be prepared for accidents","OSHA/PJ"]
,["","Glass tubing should be removed from rubber stoppers","only when it is broken;only using extreme caution;with the help of soap and water;never**","ACS/BH"]
,["","Cleaning glassware can be a safety issue","when using strong oxidants;when using soap and water;when broken glassware is present;always**","ACS/BH"]
,["","Compound A has a boiling point of 200 oC, while compound B has a boiling point of 100 oC. Which is more of a safety concern?","A, because it might burn faster;B because it has a higher vapor pressure;just knowing the boiling point is not enough to decide the answer to this question**","ACS/BH"]
,["","Who's responsibility is it to be aware of chemical hazards?","the student, but only after being informed by a professor;only the professor;anyone involved in work in a laboratory**","ACS/BH"]
,["","What is distillation?","Distillation is when material is heated to melting and then separated.;Distillation is when a liquid is evaporated and then recondensed in another container.*;Distillation is when a substance is dissolved, heated, and then precipitated.","ACS/BH"]
,["","What is the singular most potentially dangerous aspect of distillation?","the use of flammable materials in the presence of heat*;the reduced pressure required for the procedure;the exothermic nature of the reaction","ACS/BH"]
,["","What is extraction as practiced in the organic chemistry laboratory?","the removal of one solid material from another;the removal of painful or impacted teeth;the separation of one substance from another based on solubility*","ACS/BH"]
,["","Why does extraction pose a potential safety problem?","hazardous organic solvents are always necessary;the equipment becomes pressurized and often explodes;the equipment becomes pressurized and may suddenly pop open if not handled properly, spraying hazardous chemicals into the air*","ACS/BH"]
,["","The primary danger of refrigerators in the laboratory is","most refrigerators in use in undergraduate laboratories are not explosion-proof;they are insecure;electricity may fail, leading to warming and loss of containment of hazardous materials*","ACS/BH"]
,["","Material to be disposed of in the laboratory","must always be neutralized first;must always be diluted copiously with water first;must always be handled in accordance with safety guidelines specific to that class of compound*","ACS/BH"]
,["","Chemical reactions","must never be left unattended;may be left unattended overnight as long as secondary containment is present;may be left unattended overnight provided information is posted in plain sight indicating what the reaction involves and who to contact (including phone numbers) in case of emergency*","ACS/BH"]
,["Section 2. Chemical Hazards","","",""]
,["","Major factors in toxicity include","dose;the route of exposure;personal factors such as age and gender;all of the above*","ACS/BH"]
,["","The four routes by which toxic chemicals can enter the body include:","inhalation, indigestion, transmission of bodily fluids, and interjection;inhalation, ingestion, absorption, and injection*;inhalation, constipation, instigation, and investigation","ACS/BH"]
,["","Acute poisoning","is characterized by rapid assimilation of the substance*;is characterized by repeated exposure over months or years;always has a sudden effect;is usually fatal","ACS/BH"]
,["","Chronic poisoning","is characterized by rapid assimilation of the substance;is characterized by repeated exposure over months or years*;always has a sudden effect;is usually fatal","ACS/BH"]
,["","Synergy is","the effect of one substance making another less toxic;the result of allergens in the environment;the effect of two substances in combination being more toxic than the effect predicted based on the sum of the individual components*","ACS/BH"]
,["","Some toxic chemicals","can be assimilated directly through the skin unless proper protection is taken;can be ingested by transferance from hand to mouth after leaving the laboratory;can be inhaled even if the substance has a very high boiling point;all of the above*","ACS/BH"]
,["","Allergic reactions","always require a second exposure*;do not always involve the immune system;are examples of synergism","ACS/BH"]
,["","What does MSDS stand for?","Material Safety and Density Sheets;Material Safety and Data Sheets*;Material Security and Data Sheets;Maternal Safety and Dada Sheets","ACS/BH"]
,["","Where can information regarding specific chemical safety be found? ","MERTKA;OSHA Laboratory Standards;MSDSs*","ACS/BH"]
,["","MSDSs","are written by government agencies only;are written by manufacturers and government agencies*;are written in a defined format by contractors for OSHA","ACS/BH"]
,["","OSHA stands for","the Occupational Safety and Hazard Agency;the Occupational Safety and Health Administration*;Only Some Hazards are Actual","ACS/BH"]
,["","OSHA is","a state organization;a federal agency*;a private company contracted by the US government","ACS/BH"]
,["","The CAS registry number is","a unique identifying number for each chemical*;a rating of toxicity;a rating of flammability","ACS/BH"]
,["","An LD50 of 20 in mice indicates that","50% of a test population of 100-kg mice would be expected to die within a certain time period if exposed to 20 g;50% of a test population of 100-g mice would be expected to die within a certain time period if exposed to 2 mg*;50% of a test population of 100-kg mice would be expected to die within a certain time period if exposed to 20 ppm of the vapor","ACS/BH"]
,["","PEL stands for","personal exposure limit;permissible exposure time length;permissible exposure limit*","ACS/BH"]
,["","A PEL of 10 ppm indicates that","10 parts per million of this substance in the air is enough to kill you;10 parts per million of this substance in the water is safe for the average adult;the maximum allowable workplace air exposure to this substance for an adult worker for 8 hours a day, 40 hours a week, for a year is 10 ppm;the maximum allowable workplace air exposure to this substance for an average healthy adult worker for 8 hours a day, 40 hours a week, for a working lifetime is 10 ppm*","ACS/BH"]
,["","STEL refers to","the safe telecommuting exposure limit;the standard task exposure limit;the maximum allowable exposure on a short term basis after which the PEL or TLV is considered violated*","ACS/BH"]
,["","TWA, as regards to safety, stands for","Trans World Airlines;Time-Weighted Average*;Total Workplace Assessment","ACS/BH"]
,["","TLV refers to","Tender Loving Volatiles;Total Loss of Volition;Threshold Limit Value*","ACS/BH"]
,["","The label DANGER on a chemical container most accurately signifies","that the hazards can cause serious injury*;that the hazards can cause less than serious injury;that users should be careful when using, handling, or storing the chemical","ACS/BH"]
,["","The label WARNING on a chemical container most accurately signifies","that the hazards can cause serious injury;that the hazards can cause less than serious injury*;that users should be careful when using, handling, or storing the chemical","ACS/BH"]
,["","The label CAUTION on a chemical container most accurately signifies","that the hazards can cause serious injury;that the hazards can cause less than serious injury;that users should be careful when using, handling, or storing the chemical*","ACS/BH"]
,["","Labels on bottles containing hazardous chemicals must indicate","the name of the chemical;one of the signal words, Danger, Warning, or Caution;the principal foreseeable hazard when used in an industrial workplace;the precautionary measures that will protect users;first aid instructions;all of the above*","ACS/BH"]
,["","The label CORROSIVE on a chemical container indicates","that the material can degrade rapidly upon exposure to air;that the material is an oxidant; that contact destroys living tissue as well as equipment*","ACS/BH"]
,["","FLAMMABLE means","the opposite of \"inflammable\";easily ignited and capable of burning rapidly*;capable of autoignition at or only slightly above room temperature.","ACS/BH"]
,["","\"Fatal if swallowed\" indicates","that the substance will cause death if ingested;that the substance will cause death if a sufficient amount is ingested*;that 50% of a population of test animals that ingested this substance died","ACS/BH"]
,["","teratogens","are substances that cause birth defects or fetal death*;are substances that only pregnant women should be particularly concerned about;are naturally occurring pyrophoric poisons","ACS/BH"]
,["","Examples of oxidizing agents include","~KNO3, KMnO4, and Na2CrO4*;~H2, C, gasoline, acetic acid;NaCN, phenol","ACS/BH"]
,["","Examples of reducing agents include","~KNO3, KMnO4, and Na2CrO4;~H2, C, gasoline, acetic acid*;NaCN, phenol","ACS/BH"]
,["","Examples of corrosive chemicals include","~metallic sodium, NaH, PH3, H2C2;~HCl, H3PO4, KOH, Cl2*;NaCN, phenol","ACS/BH"]
,["","Examples of water-reactive chemicals include","~metallic sodium, NaH, PH3, H2C2*;acid/base pairs, redox pairs;ethanol, n-hexane","ACS/BH"]
,["","Examples of air-reactive include","metallic potassium, metallic sodium*;ethanol, n-hexane;NaCN, phenol","ACS/BH"]
,["","Examples of highly toxic chemicals include","ethanol, n-hexane;acid/base pairs, redox pairs;NaCN, phenol*","ACS/BH"]
,["","Examples of less toxic chemicals include","ethanol, n-hexane*;acid/base pairs, redox pairs;NaCN, phenol","ACS/BH"]
,["","Examples of self-reactive chemicals include","metallic potassium, metallic sodium;~picric acid, trinitrotoluene,CH3N2*;NaCN, phenol","ACS/BH"]
,["","Examples of incompatible chemicals include","acid/base pairs, redox pairs*;~picric acid, trinitrotoluene,CH3N2;NaCN, phenol","ACS/BH"]
,["","Organic solvents are potential hazards because","most organic solvents are volatile and flammable*;most organic solvents absorb directly through the skin;most organic liquids burn;all of the above","ACS/BH"]
,["","Solvents such as THF and ethyl ether are particularly hazardous because","they are flammable;they form explosive peroxides when exposed to air*; they penetrate the skin;all of the above","ACS/BH"]
,["","Exposure to dilute aqueous hydrofluoric acid is indicated by","rapid reddening of the affected area;an immediate burning sensation;no immediate pain, but then, after several hours, excruciating pain*","ACS/BH"]
,["","When diluting an acid with water,","do it quickly, so that a cool fountain of toxic material is ejected from the flask;do not stir the flask, because it might break;always add acid to water, not water to acid, so that the heat of reaction can be controlled*","ACS/BH"]
,["","Phosphoric acid","should never be tasted;is a weak acid, so it is not toxic;though a component of soft drinks, reacts vigorously with water when in concentrated form*","ACS/BH"]
,["","Nitric acid","is a reducing agent;is a strong oxidizing agent*;causes skin irritation only in concentrated form","ACS/BH"]
,["","Perchloric acid","is a very powerful oxidizing agent;can react explosively with organic compounds;should not be used by undergraduates unless they are closely supervised;all of the above*","ACS/BH"]
,["","Spilled mercury","is an acute poison;is dangerous in liquid form, because it absorbs directly through the skin;is dangerous because its vapor can be inhaled, and it is a cumulative poison*","ACS/BH"]
,["","True or false: Formaldehyde is an allergen as well as a suspected carcinogen","true**;false","ACS/BH"]
,["","Organic peroxides are particularly dangerous","when heated;when concentrated;when ethyl ether or tetrahydrofuran is left open to the air and allowed to evaporate;all of the above*","ACS/BH"]
,["","Examples of compounds that can form dangerous explosive peroxides include:","cyclohexene;cyclooctene;decalin;para-dioxane;ethyl ether;isopropyl ether;tetrahydrofuran;tetralin;all of the above*","ACS/BH"]
,["","Cryogenic liquids are materials with boiling points of less than [[-]]73 oC ([[-]]100 oF). Liquid nitrogen, helium, and argon, and slush mixtures of dry ice with isopropanol are the materials most commonly used in cold traps to condense volatile vapors from a system. In addition, oxygen, hydrogen, and helium are often used in the liquid state. The primary hazards of cryogenic liquids include:","fire or explosion;pressure buildup;embrittlement of structural materials;frostbite;asphyxiation;all of the above*","OSHA/PJ"]
,["Section 3. Recommended Laboratory Techniques","","",""]
,["","There is a definite correlation between orderliness and level of safety in the laboratory. In addition, a disorderly laboratory can hinder or endanger emergency response personnel. Which of the following housekeeping rules should not be adhered to?","never obstruct access to exits and emergency equipment;clean work areas, including floors, regularly;properly label and store all chemicals;secure all compressed gas cylinders to walls or benches;store chemical containers on the floor* ","OSHA/PJ"]
,["","\"Secondary Containment\" refers to","keeping undergraduates away from donuts at seminars;holding high school students beyond the fourth year;an additional pan or some sort of equipment that will catch and contain a spill if the primary vessel containing a hazardous material accidentally breaks*","ACS/BH"]
,["","What quantity of liquid chemical describes the general transition between maximum amounts to keep at workbenches and amounts to be stored?","250 mL;500 mL;1.0 L*;1.5 L;2.0 L","OSHA/PJ"]
,["","Chemicals being transported outside the laboratory or between stockrooms and laboratories should be in break-resistant secondary containers. Secondary containers with carrying handle(s) are commercially available in a variety of sizes. These containers may be made from which of the following?","rubber;metal;plastic;any of the above*","OSHA/PJ"]
,["","All containers or laboratory glassware having chemicals in them should be properly labeled. When should you place a label on a container?","after adding a chemical to the container;during use of the chemical in the container;prior to adding a chemical to the container*;after the container has been emptied","OSHA/PJ"]
,["","When Professor Hanson had to use his home kitchen fire extinguisher when saut[[eacute]]ing onions, it was because","he thought it would be a good way to test the extinguisher;he failed to recognize the importance of the term \"flash point\"*;he was smoking too close to the oil","ACS/BH"]
,["","Laboratory hoods are NOT to be relied upon for protection from","explosion*;implosion;reducing exposure to harmful vapors","ACS/BH"]
,["","A simple Kimwipe taped to the bottom of a hood sash so that it can blow in the wind","is a reasonably good way to tell if the hood is working properly;though inexpensive, is a much more sensive measure of airflow than most electronic airflow indicators;cannot be relied upon as an indicator of airflow*","ACS/BH"]
,["","The failure of a belt-driven roof-mounted hood motor is indicated by","the sounding of the hood alarm;loss of airflow into the hood;reverse flow of air out of the hood;a disturbing noise from above;inordinate silence;any of the above*","ACS/BH"]
,["","On hoods where sashes open vertically, work with the hood sash in the _____ position. ","highest possible;lowest possible*;most comfortable viewing;mid-point","OSHA/PJ"]
,["","The proper person to notify in the case of a malfunctioning hood is","the stockroom manager;the laboratory supervisor;laboratory coworkers;facilities personnel;all of the above*","ACS/BH"]
,["","Flammable liquids burn only when their vapor is mixed with air in the appropriate concentration. When handling flammable liquids you should ","minimize the creation of flammable vapors;use adequately ventilated work areas;keep containers closed except during transfer of contents;ground metal lines and vessels to avoid static-generated sparks;avoid nearby sources of ignition;all of the above*","OSHA/PJ"]
,["","Hazardous electrical voltages may be as low as","10 V AC;25 V AC*;5V DC;25 V DC","ACS/BH"]
,["","Centrifuges are particularly unsafe if","not balanced;starting to walk off the table;a clinking sound is heard;opened prior to coasting to a full stop;all of the above*","ACS/BH"]
,["","High pressure air","can penetrate the skin without making any visible opening, causing it to balloon (ewwww!)*;is good for cleaning glassware;is good for evaporating organic compounds to dryness","ACS/BH"]
,["","Ultraviolet light should be considered dangerous if","it has a wavelength longer than 400 nm;it has a wavelength longer than 250 nm;it has a wavelength shorter than 250 nm*;it is seen to have a greenish glow","ACS/BH"]
,["","When heating a reaction,","the equipment should be assembled in such a way that heat can be removed rapidly and easily at any time;flames should be avoided;always be careful not to exceed the smoking temperature of the oil if an oil bath is used;all of the above*","ACS/BH"]
,["","The best liquid for use in a dry-ice bath is","isopropyl alcohol*;ethyl ether;acetone","ACS/BH"]
,["","When working at reduced pressure,","always be aware of the danger of implosion;surround the apparatus with shielding;place a cold trap between the apparatus and the vacuum pump;be alert to bumping (sudden boiling);all of the above*","ACS/BH"]
,["Section 4. Safety Equipment and Emergency Procedures","","",""]
,["","Before you help another person in an emergency,","evaluate the potential danger to yourself*;act first, think later;reread the safety policies for the laboratory","ACS/BH"]
,["","When an emergency occurs:","report the nature of the emergency to yoru instructor and, if necessary, to the appropriate fire or medical facility;when calling 9911, stay on the line and follow the dispatcher's instructions. Be prepared to tell them your location, phone number, where you will meet emergency crews, general medical status of any hurt or trapped individuals, whether an explosion has occurred, and whether there is a chemical or electrical fire;tell others in the vacinity about the nature of the emergency;do not move any injured individuals unless they are in immediate danger;meet the ambulane or fire crew at the place indicated;stay off the phone once you hang up so that it is free for emergency crews to call you;all of the above*","ACS/BH"]
,["","The best way to fight a fire","is to prevent it in the first place*;is with a fire blanket","ACS/BH"]
,["","A small fire","often can be extinguished by suffocating it;can quickly grow to become a larger fire;can generally be dowsed with a wet towel to put it out;all of the above*","ACS/BH"]
,["","The fire alarm should be pulled and the fire department should be called","whenever there is a fire of any size whatsoever;if in your estimation it is important to do so*;only when a fire is out of control","ACS/BH"]
,["","The NFPA provides and advocates for scientifically-based consensus codes and standards, research, training and education related to fire protection. NFPA 45 is the standard on fire protection for laboratories using chemicals. NFPA stands for what?","National Fire Protection Agency;National Fire Protection Association*;National Fire Procedures Advocates;National Fire and Programming Agency","NFPA/PJ"]
,["","All chemical laboratories be equipped with fire extinguishers. Which one of the four types of extinguishers most commonly used should not be found in a chemical laboratory?","Water*;Carbon Dioxide;Dry Chemical;Met-L-X","NFPA/PJ"]
,["","A \"Class-A\" fire extinguisher can be used to treat fires involving _____ as fuel sources. ","flammable or combustible liquids;ordinary combustibles (woods, plastics, etc.)*;electrical equipment;combustible metals","NFPA/PJ"]
,["","A \"Class-B\" fire extinguisher can be used to treat fires involving _____ as fuel sources. ","flammable or combustible liquids*;ordinary combustibles (woods, plastics, etc.);electrical equipment;combustible metals","NFPA/PJ"]
,["","A \"Class-C\" fire extinguisher can be used to treat fires involving _____ as fuel sources. ","flammable or combustible liquids;ordinary combustibles (woods, plastics, etc.);electrical equipment*;combustible metals","NFPA/PJ"]
,["","A \"Class-D\" fire extinguisher can be used to treat fires involving _____ as fuel sources. ","flammable or combustible liquids;ordinary combustibles (woods, plastics, etc.);electrical equipment;combustible metals*","NFPA/PJ"]
,["","Fire extinguishers have numerical and ABC ratings on them that look something like \"1-A:10-B:C\". If an extinguisher has a \"6-A:80-B:C\" rating, it can put out ____ fire as a \"3-A:40-B:C\" extinguisher.","twice as much*;half as much;an equal amount of;three times more","NFPA/PJ"]
,["","When operating a fire extinguisher, remember the mnemonic PASS. PASS represents the steps used to properly operate the extinguisher and it stands for which of the following? ","Pin, Aim, See, Swing;Pull, Aim, Squeeze, Sweep*;Pull, Access, Seize, Sweep;Plan, Access, Squeeze, Swing","NFPA/PJ"]
,["","True or false: Never use a fire blanket until after the fire is extinquished.","true**;false","ACS/BH"]
,["","Chemicals being transported outside the laboratory or between stockrooms and laboratories should be in break-resistant secondary containers. Secondary containers with carrying handle(s) are commercially available in a variety of sizes. These containers may be made from which of the following?","rubber;metal;plastic;any of the above*","OSHA/PJ"]
,["","For small liquid spills that only affect a small area of skin, immediate flush with flowing water for at least ","5 minutes;10 minutes;15 minutes*;30 minutes","ACS/BH"]
,["","True or false: Solid chemicals that are spilled on the skin can usually be brushed off with no adverse consequences.","true**;false","ACS/BH"]
,["","Larger spills of a hazardous liquid on the skin ","can usually be wiped off without serious problem;require immediate use of the safety shower*;should be dealt with by taking off all the affected clothes immediately, then running to the nearest shower","ACS/BH"]
,["","True or false: Kitty litter is often effective for cleaning up spilled liquids.","true** (hey, it works for kitty!);false (who are you trying to kit?)","ACS/BH"]
,["","A large cloud of \"smoke\" and a WHOOSHing noise in the NMR room indicates","it's time to get a new NMR;your sample is burning;the NMR is on fire;it's time to hit the emergency ventilation button and leave the room immediately. Find the nearest professor and tell them, \"Better tell Bob that the NMR has quenched.\"*","AMMRL/BH"]
,["","The culture of laboratory safety depends ultimately on the working habits of individual chemists and their sense of teamwork for the protection of what group? ","individual chemists;co-workers;neighbors;wider community;the environment;all of the above*","OSHA/PJ"]
,["","True or false: Finishing this quiz means I don't have to read the American Chemical Society pamphlet Safety in Academic Chemistry Laboratories.","true;false (not so fast--now it's time to REREAD the sections you haven't mastered!)**","BH"]
)