Chem 1LD Safety Quiz Review with correct answers 100%

Chem 1LD Safety Quiz Review with correct answers 100% The most probably laboratory emergencies are chemical spills, minor burns and cuts, and fires. Which of the following statements are TRUE about responding to emergencies? - Correct Answer (all choices) stay calm; if possible turn off lab equipment before leaving lab for a fire alarm; know where the stairwells are; all laboratories must have two exits Which of the following common household products contain flammable chemicals? - Correct Answer gasoline; nail polish remover; antifreeze; rubbing alcohol Which of the following are ways to stop a fire? - Correct Answer limit quantities of flammable substances in work area; remove ignition sources; place a beaker over a small flame to remove oxygen; ground metal container to prevent static electricity Which of the following statements are true about flammability? - Correct Answer a fire cannot start above or below a vapor's flammability limits; inflammable is another word for flammable The National Fire Protection Association (NFPA) diamond has a ___ section for flammability. If the number ___ appears in this section, the chemical is extremely flammable. If the number ___ appears in this section, the chemical is a combustible. It will catch fire when heated. The Global Harmonized System (GHS) symbol is a picture of a ___. If the hazard category is ___, the chemical is extremely flammable. If the hazard category is ___, the chemical is a combustible. - Correct Answer red; 4; 2; fire; HC 1; HC 4 Which of the following are true statements about fume hoods? - Correct Answer Room air should be drawn into the fume hood; the window on the front of the fume hood is called a sash; all work should be done at least 6 inches inside the hood; a tissue paper held at the bottom of a sash should blow into the hood Both evaporation of a liquid and sublimation of a solid are sources of gaseous compounds which can be inhaled. If you can smell a chemical, you are inhaling that chemical. The "smell" of a perfume, car exhaust, or flowers are all a result of inhalation. So obviously, not all chemicals you smell are dangerous - but many are. Match the terms connected to gases to their definitions: PEL, odor threshold, odor fatigue, IDLH, OEL - Correct Answer permissible exposure; gas concentration; decreased sensitivity; immediately dangerous; occupational exposure Which of these chemicals will you smell AFTER it becomes hazardous? - Correct Answer *the chemical with its PEL lower than its odor threshold* Which statement about gloves is true? - Correct Answer gloves should be removed when they come in contact with any hazardous chemical; no glove material protects against all chemicals match the term describing glove safety to the description: