CHEM 1120 Final Exam All Cards – Complete Chemistry Flashcard Study Guide
(2026)
How do you determine the last digit in any measured number? - ANS ✔✔Estimate one digit
past the smallest precisely known digit or marking.
which kind of glassware should be used for applications in which great accuracy is needed? -
ANS ✔✔volumetric glassware
which kind of glassware is capable of measuring a range of volumes of liquid? - ANS
✔✔graduated glassware
which kind of glassware is designed to measure one specific volume of liquid? - ANS
✔✔volumetric glassware
in order to use a pipet, place a______Use this object to fill the pipet such that the ____of the
liquid is even with the volume line. Release the liquid, touching the tip of the pipet to the side
of the container if necessary to release the last drop____the pipet tip - ANS ✔✔(bulb or pump)
at the top of the pipet. meniscus, outside
standard deviation - ANS ✔✔a measure of variability, describes the average distance from the
average (mean)
contrast between systematic and random error - ANS ✔✔A systematic error is some aspect of
an instrument or other laboratory tool that causes the data to be consistently inaccurate in
some way.
A random error is unpredictable and not consistent, such as with a pH meter that fluctuates up
and down during measurement.
,what is/are the use(s) of the following?
-iron ring
-clay triangle
-buret clamp - ANS ✔✔iron ring - funnel (or clay ring) can rest in it directly
clay triangle - pictured is specifically designed to support a crucible.
buret clamp - is designed to hold the long buret used in titrations.
When using a clamp to secure a flask to a ring stand, begin by choosing a ring stand and clamp
that are appropriately sized for the
_____. Position the clamp directly _____ the base of the ring stand. Turn the knobs of the
clamp, making sure not to _____ the clamp around any glassware. - ANS ✔✔glassware, above,
overtighten
What are the best practices while sharing a lab balance with other students? - ANS ✔✔-write
down the mass of any glassware or weighing vessels before leaving the balance.
-Work carefully to avoid making any messes for other users to deal with. Use vessels such as
weigh boats rather than placing any materials directly on the balance.
-If you find any issues with the balance, such as not being properly stabilized, let a TA or
instructor know so that the problem does not go ignored for others.
When using a properly stabilized balance, how should you ensure that you get the most
accurate mass reading possible? - ANS ✔✔-diminish any unusual environmental factors, such as
abnormal temperatures or air currents.
-Close the side shields on any balance that has them while making a measurement to decrease
impact from any air flow.
-Your sample should be placed in the middle of the balance pan.
-The balance should also be stabilized on the table
, Identify techniques to be used for accurate solution preparation using a volumetric flask. - ANS
✔✔make sure that all solutes are completely dissolved. Add solvent to the fill line, read the
liquid volume at eye level from the bottom of the meniscus. Once the correct volume is in the
flask, use the stopper and invert the flask several times to mix the solution.
Identify effective techniques for accurate pipet use. - ANS ✔✔Measure liquid by aligning the
meniscus with the volume line & do not let liquid enter the pipet bulb or pump.
When cleaning a buret, begin by coating the inside with ___ Empty most of it out, then drain
the rest by____. Rinse with_____, then hang upside-down on a buret rack. - ANS ✔✔detergent
solution. opening the stopcock, deionized water
Where should glassware be stored after it is cleaned? - ANS ✔✔In a drying oven, or designated
locations such as drawers or buret racks
When you are done using most glassware in the lab, what should you do? - ANS ✔✔Clean the
glassware with a detergent solution.
Dispose of any chemicals in the proper waste container.
Return the glassware to the appropriate location to dry.
What purposes can funnels serve in the lab? - ANS ✔✔Help for transferring solid chemicals
from weigh boats
Assistance for pouring liquids into burets
Support for filter paper during a gravity filtration
how should a buret be condtioned? - ANS ✔✔To condition the buret, add a small volume of the
titrant to the buret and rotate the barrel at an angle close to horizontal so that the liquid makes
contact with the full inner surface of the barrel. Complete this action two more times and
discard each volume in a designated waste container.
(2026)
How do you determine the last digit in any measured number? - ANS ✔✔Estimate one digit
past the smallest precisely known digit or marking.
which kind of glassware should be used for applications in which great accuracy is needed? -
ANS ✔✔volumetric glassware
which kind of glassware is capable of measuring a range of volumes of liquid? - ANS
✔✔graduated glassware
which kind of glassware is designed to measure one specific volume of liquid? - ANS
✔✔volumetric glassware
in order to use a pipet, place a______Use this object to fill the pipet such that the ____of the
liquid is even with the volume line. Release the liquid, touching the tip of the pipet to the side
of the container if necessary to release the last drop____the pipet tip - ANS ✔✔(bulb or pump)
at the top of the pipet. meniscus, outside
standard deviation - ANS ✔✔a measure of variability, describes the average distance from the
average (mean)
contrast between systematic and random error - ANS ✔✔A systematic error is some aspect of
an instrument or other laboratory tool that causes the data to be consistently inaccurate in
some way.
A random error is unpredictable and not consistent, such as with a pH meter that fluctuates up
and down during measurement.
,what is/are the use(s) of the following?
-iron ring
-clay triangle
-buret clamp - ANS ✔✔iron ring - funnel (or clay ring) can rest in it directly
clay triangle - pictured is specifically designed to support a crucible.
buret clamp - is designed to hold the long buret used in titrations.
When using a clamp to secure a flask to a ring stand, begin by choosing a ring stand and clamp
that are appropriately sized for the
_____. Position the clamp directly _____ the base of the ring stand. Turn the knobs of the
clamp, making sure not to _____ the clamp around any glassware. - ANS ✔✔glassware, above,
overtighten
What are the best practices while sharing a lab balance with other students? - ANS ✔✔-write
down the mass of any glassware or weighing vessels before leaving the balance.
-Work carefully to avoid making any messes for other users to deal with. Use vessels such as
weigh boats rather than placing any materials directly on the balance.
-If you find any issues with the balance, such as not being properly stabilized, let a TA or
instructor know so that the problem does not go ignored for others.
When using a properly stabilized balance, how should you ensure that you get the most
accurate mass reading possible? - ANS ✔✔-diminish any unusual environmental factors, such as
abnormal temperatures or air currents.
-Close the side shields on any balance that has them while making a measurement to decrease
impact from any air flow.
-Your sample should be placed in the middle of the balance pan.
-The balance should also be stabilized on the table
, Identify techniques to be used for accurate solution preparation using a volumetric flask. - ANS
✔✔make sure that all solutes are completely dissolved. Add solvent to the fill line, read the
liquid volume at eye level from the bottom of the meniscus. Once the correct volume is in the
flask, use the stopper and invert the flask several times to mix the solution.
Identify effective techniques for accurate pipet use. - ANS ✔✔Measure liquid by aligning the
meniscus with the volume line & do not let liquid enter the pipet bulb or pump.
When cleaning a buret, begin by coating the inside with ___ Empty most of it out, then drain
the rest by____. Rinse with_____, then hang upside-down on a buret rack. - ANS ✔✔detergent
solution. opening the stopcock, deionized water
Where should glassware be stored after it is cleaned? - ANS ✔✔In a drying oven, or designated
locations such as drawers or buret racks
When you are done using most glassware in the lab, what should you do? - ANS ✔✔Clean the
glassware with a detergent solution.
Dispose of any chemicals in the proper waste container.
Return the glassware to the appropriate location to dry.
What purposes can funnels serve in the lab? - ANS ✔✔Help for transferring solid chemicals
from weigh boats
Assistance for pouring liquids into burets
Support for filter paper during a gravity filtration
how should a buret be condtioned? - ANS ✔✔To condition the buret, add a small volume of the
titrant to the buret and rotate the barrel at an angle close to horizontal so that the liquid makes
contact with the full inner surface of the barrel. Complete this action two more times and
discard each volume in a designated waste container.
