Quiz 1
What is the definition of a safety hazard?
A potential source of harm or damage
What happens if you come to lab dressed in clothing inappropriate to the lab space?
Check in with the instructor and then go change and come back
Which safety pictogram is associated with caustic reagents such as strong acids like hydrochloric and sulfuric acids and strong bases like sodium hydroxide?
Corrosive, harmful
If you are too ill to come to lab, what should you do?
Do not go to lab, go to student health services, do not go to lab with a cough
Which of the following is a strong mineral (inorganic) acid? HCl, H2SO4 and NaHCO3
HCl
Which of the following is a strong mineral (inorganic) base? NaHCO3, Na2CO3, HSO4-, KOH
KOH
Why do we use SDS rather than MSDS?
MSDS stands for material safety data sheet and it is the first generation fo this type of documentation; SDS are the second generation of such documentation and integrate safety pictograms that are intelligible to people around the globe
When is it inappropriate for a student to be wearing laboratory gloves?
Outside of the lab room, grabbing a door handle
What does the acronym RAMP stand for?
Recognize hazards around us Assess the risks of the hazard Minimize the risks Prepare for emergency (being safe means being free from danger, injury, and damage)
What section gives information about hazards and handling precautions?
Section 9: Safety data sheets (SDS), pictograms, and chemical safety vocabulary
Why is it important to avoid making acid and base solutions in graduated cylinders?
They do not allow enough space for mixing and to allow the reaction to take place
If your nearest neighbor splashes chemical into the eye, what will you do?
alert the instructor, take them to the eyewash station and help them rinse out their eyes
If you need emergency medical attention, who is authorized to call 911?
anyone
Which hazard term best describes a strong mineral (inorganic) acid? (sulfuric acid & hydrochloric acid)
corrosive, harmful
Which safety pictogram best describes a strong mineral (inorganic) acid?
corrosive, harmful
What is the safe cell phone and earbud policy for lab work?
do not wear them while working in lab
Which pictogram is associated with organic solvents such as ethanol, acetone, ethyl acetate hexane?
flammable, harmful
If strong acid splashes on your hand, how will you react?
flush the affected area under a heavy flow of water for 10 - 15 minutes; do not neutralize acids/bases spilled on skin
What type of protective eyewear is best for students wearing contacts?
goggles
Which hazard term best describes organic solvents?
health hazard
How will you dispose of excess organic solvent, contaminated with mineral/inorganic acid?
neutralize inorganic acid with sodium bicarbonate, dispose organic waste into organic waste container
How will you dispose of organic solvent contaminated by mineral/inorganic base?
neutralize inorganic base with citric acid; evaluate pH and dispose in organic waste container
What must you do before disposing any aqueous acid or basic waste?
neutralize them
What does PPE stand for? Give 5 examples of appropriate PPE
personal protective equipment lab coat, lab safety glasses, gloves, masks, pants, shoes, shirts
What is the purpose of safety pictograms?
provide safety warnings independent of language
What is the purpose of an SDS?
provides information about hazards and handling precautions of the chemicals used in each experiment
If you cut your hand in lab, what will you do?
remove gloves, go directly to the sink; wash affected skin under steady stream of water (for 10-15 minutes if you suspect chemical contamination)
If you have a reaction mixture heating on a hot plate or in a heating mantel, what is the best way to stop heating?
remove the heat source
What section of an SDS gives information about physical and chemical properties?
section 9.1
What is the meaning of SG and what are its units?
specific gravity, unitless
List three types of clothing not permitted in lab
tank tops, crop tops, shorts, skirts, dresses
What is the purpose of chemists working in a chemical hood?
to prevent breathing in harmful gases/fumes (we use the common space for notetaking and instrumentation, perform all work inside the hood)
Name 5 types of waste commonly generated in a working organic lab
trash waste, glass waste, organic liquid chemical waste, solid chemical waste, sharps waste
What will you do if you drop and break a beaker?
use a dustpan and brush to sweep up broken glass and dispose it into a glass waste container
If you are splashed in the face with organic solvent, how will you react?
use eyewash/drench hose; flush the area under a heavy flow of water for 10-15 minutes
