Chem 120L exam QUESTIONS WITH /\ /\ /\ /\ /\
CORRECT ANSWERS /\
Goggles must be worn because: - CORRECT ANSWERS ✔✔--User
/\ /\ /\ /\ /\ /\ /\ /\ /\
inexperience increases the chance of splashes and chemical spills /\ /\ /\ /\ /\ /\ /\ /\ /\
--The number of students working in the lab increases the chances
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
of collision and subsequently chemical splashes
/\ /\ /\ /\ /\ /\
--They provide protection from flying objects such as broken
/\ /\ /\ /\ /\ /\ /\ /\ /\
shards of glass /\ /\
--They provide maximum protection from chemicals spilled or
/\ /\ /\ /\ /\ /\ /\ /\
splashed in the eyes /\ /\ /\
To maintain a safe working environment in the laboratory it is
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
important for each student to: - CORRECT ANSWERS ✔✔Become
/\ /\ /\ /\ /\ /\ /\ /\ /\
familiar with the safe handling procedures for each chemical used
/\ /\ /\ /\ /\ /\ /\ /\ /\
Clean up all spills as soon as they occur
/\ /\ /\ /\ /\ /\ /\ /\
Learn the location of all safety equipment in the lab room
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
Keep aisles between benches free of trip hazards such as
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
knapsacks or unused stools /\ /\ /\
Liquid dripping down the sides of a bottles poses a safety hazard
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
because: - CORRECT ANSWERS ✔✔It leaves "bottle ring" spills
/\ /\ /\ /\ /\ /\ /\ /\ /\
which could damage or react with the bench surface
/\ /\ /\ /\ /\ /\ /\ /\ /\
, /\
It makes the bottle slippery and increases the chances of dropping
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
it /\
It could be dangerous for the next user to touch
/\ /\ /\ /\ /\ /\ /\ /\ /\
Fire safety in the First Year Chemistry lab requires that each
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
student learn the location of: - CORRECT ANSWERS ✔✔The
/\ /\ /\ /\ /\ /\ /\ /\ /\
nearest fire alarm pull station /\ /\ /\ /\ /\
The nearest fire extinguisher
/\ /\ /\ /\
The fire exit route from the room and building
/\ /\ /\ /\ /\ /\ /\ /\
Which of the following precautions should be taken to ensure that
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
all of the initial copper is recovered? - CORRECT ANSWERS
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
✔✔Avoid spilling solutions during transfer /\ /\ /\ /\
Stir continuously when boiling to avoid bumping
/\ /\ /\ /\ /\ /\
Solid products adhering to beakers should be added into the next
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
solution
When using vacuum filtration to separate a solid product from a
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
liquid, what is the maximum depth of solution that should be
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
added to the Buchner funnel? - CORRECT ANSWERS ✔✔two-thirds
/\ /\ /\ /\ /\ /\ /\ /\ /\
of the depth of the funnel
/\ /\ /\ /\ /\
In the technique of vacuum filtration, what is the "filtrate"? -
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
CORRECT ANSWERS ✔✔the liquid that is drawn into the flask
/\ /\ /\ /\ /\ /\ /\ /\ /\
CORRECT ANSWERS /\
Goggles must be worn because: - CORRECT ANSWERS ✔✔--User
/\ /\ /\ /\ /\ /\ /\ /\ /\
inexperience increases the chance of splashes and chemical spills /\ /\ /\ /\ /\ /\ /\ /\ /\
--The number of students working in the lab increases the chances
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
of collision and subsequently chemical splashes
/\ /\ /\ /\ /\ /\
--They provide protection from flying objects such as broken
/\ /\ /\ /\ /\ /\ /\ /\ /\
shards of glass /\ /\
--They provide maximum protection from chemicals spilled or
/\ /\ /\ /\ /\ /\ /\ /\
splashed in the eyes /\ /\ /\
To maintain a safe working environment in the laboratory it is
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
important for each student to: - CORRECT ANSWERS ✔✔Become
/\ /\ /\ /\ /\ /\ /\ /\ /\
familiar with the safe handling procedures for each chemical used
/\ /\ /\ /\ /\ /\ /\ /\ /\
Clean up all spills as soon as they occur
/\ /\ /\ /\ /\ /\ /\ /\
Learn the location of all safety equipment in the lab room
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
Keep aisles between benches free of trip hazards such as
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
knapsacks or unused stools /\ /\ /\
Liquid dripping down the sides of a bottles poses a safety hazard
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
because: - CORRECT ANSWERS ✔✔It leaves "bottle ring" spills
/\ /\ /\ /\ /\ /\ /\ /\ /\
which could damage or react with the bench surface
/\ /\ /\ /\ /\ /\ /\ /\ /\
, /\
It makes the bottle slippery and increases the chances of dropping
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
it /\
It could be dangerous for the next user to touch
/\ /\ /\ /\ /\ /\ /\ /\ /\
Fire safety in the First Year Chemistry lab requires that each
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
student learn the location of: - CORRECT ANSWERS ✔✔The
/\ /\ /\ /\ /\ /\ /\ /\ /\
nearest fire alarm pull station /\ /\ /\ /\ /\
The nearest fire extinguisher
/\ /\ /\ /\
The fire exit route from the room and building
/\ /\ /\ /\ /\ /\ /\ /\
Which of the following precautions should be taken to ensure that
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
all of the initial copper is recovered? - CORRECT ANSWERS
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\
✔✔Avoid spilling solutions during transfer /\ /\ /\ /\
Stir continuously when boiling to avoid bumping
/\ /\ /\ /\ /\ /\
Solid products adhering to beakers should be added into the next
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
solution
When using vacuum filtration to separate a solid product from a
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
liquid, what is the maximum depth of solution that should be
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
added to the Buchner funnel? - CORRECT ANSWERS ✔✔two-thirds
/\ /\ /\ /\ /\ /\ /\ /\ /\
of the depth of the funnel
/\ /\ /\ /\ /\
In the technique of vacuum filtration, what is the "filtrate"? -
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\
CORRECT ANSWERS ✔✔the liquid that is drawn into the flask
/\ /\ /\ /\ /\ /\ /\ /\ /\
