Gen Chem 1 Lab Exam Detailed Questions With Error -Free Solutions 2024/25
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Course
CHEM 106
Institution
CHEM 106
Determine when you should remove your goggles in the lab room. - Correct Answer When everyone in the room is done handling any chemicals or glassware
Determine the safest option in the lab if you need your vision to be corrected. - Correct Answer Wear corrective glasses or lenses under your ...
Gen Chem 1 Lab Exam Detailed Questions With Error -
Free Solutions 2024/25
Determine when you should remove your goggles in the lab room. - Correct Answer When everyone in
the room is done handling any chemicals or glassware
Determine the safest option in the lab if you need your vision to be corrected. - Correct Answer Wear
corrective glasses or lenses under your safety goggles for the whole experiment, but always check with
your TA or Instructor for your school's policy
Determine when to put on disposable gloves for work in the lab. - Correct Answer Before handling any
glassware or chemicals for the experiment
Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, - Correct
Answer grasp the exterior of one glove with a gloved hand
...peel off the first glove ...a bare finger
Move to the safety shower if you spill hazardous chemicals on your - Correct Answer skin or
clothing....pull....15 minutes
In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash
station? - Correct Answer 15 minutes
Under what conditions should a student inform the instructor of a lab injury? - Correct Answer The
instructor must be informed of all laboratory injuries.
All lab participants must remain prepared to use safety equipment in case of emergency. Identify the
components of effective preparation. - Correct Answer Knowing what safety equipment is
available....Being familiar with how safety equipment is used.....Understanding where the safety
equipment is located
Which types of signs are posted to convey information about chemical storage? - Correct Answer
Hazard signs such as "Flammable," "Oxidizer," and "Corrosive"..... National Fire Protection Association
(NFPA) diamond.....Gas Cylinder sign
,Which signs are typically posted in areas of active lab work? - Correct Answer Chemical storage
signs....Safety equipment signs....Personal protective equipment (PPE) sign....Sign prohibiting food and
drink
What information does not need to be included a chemical waste label? - Correct Answer A description
of the experiment the chemicals were used for
Which chemical waste situation should always be supervised or performed by an instructor?
Note that you still may need to alert your instructor about the described incident, even if you clean it up
yourself. - Correct Answer Cleaning up a broken mercury thermometer
When should you start a new chemical waste container in the lab? - Correct Answer When the contents
of the current container are a couple inches below the brim of the container
What should you do every time before you leave the lab? - Correct Answer Remove your labcoat, if you
are wearing one....Remove your gloves.....Wash your hands.
While picking up a buret, an unknown solution left by a previous solution drips onto your hand.....While
checking on a stirring solution, the solution splashes up towards your face.....While transferring a
solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench.....While
pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor...... -
Correct Answer Gloves...Goggles....Lab coat....closed-toe shoes
fire on a person
cuts or minor burns
chemicals on clothes
chemicals in eyes
large fire on the bench top - Correct Answer fire blanket
first aid kit
safety shower
eyewash station
, fire extinguisher
clothing fire
large fire on floor
small bench top fire - Correct Answer fire blanket
fire extinguisher
overturned beaker
Which signs are typically posted in areas of active lab work? - Correct Answer Personal protective
equipment (PPE) sign....Sign prohibiting food and drink...Safety equipment signs....Chemical storage signs
What is the main precaution to take if a Gas Cylinder sign is present in the lab? - Correct Answer
Visually check that the gas cylinder is restrained but keep a safe distance from it.
What are the best practices for safely handling waste in the lab? - Correct Answer Check labels or
instructions before any disposal.....Always wear appropriate Personal Protective Equipment
If you drop or break glassware in lab, first - Correct Answer get thick gloves or dustpan....carefully
collect all the broken glassware....broken glass container
302
230
300OX
240COR - Correct Answer moderately unstable or reactive.(302)...stable, has health risks but no special
hazards(230)...oxidizer, not flammable (300OX)...has a flash point below room temp(240COR)
When performing an addition or subtraction calculation, significant figures in the calculated result are
dictated by the.... of the measured numbers. The calculated result should have....the measured number
in the calculation with the fewest. - Correct Answer decimal places....the same number of digits past
the decimal point as... digits past eh decimal points
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