Chem 210 Final Exam with Questions
and Correct Answers Latest Updated
How can you increase a solid substance's solubility in a solution? - CORRECT
ANSWERS raise the temperature
This term/concept describes why grocers spray fruits and vegetables
periodically to make them look fresh - CORRECT ANSWERS osmosis
what is the reason why icy roads are sprayed with salt in the winter time -
CORRECT ANSWERS the salt lowers the temperature at which the water on the
roads will freeze "Freezing Point Depression"
what do we call the dip at the top of the water level in a graduated cylinder -
CORRECT ANSWERS meniscus
if the maximum amount of solute that can dissolve in 100 mL of water is 24
grams . what would the solution be called if we forced 26 g of solute in it -
CORRECT ANSWERS supersaturated
this type of solution has particles floating at the top and settled at the bottom -
CORRECT ANSWERS suspension
this phenomenon occurs when a laser passes through a colloid and is also
seen in the path of light caused by your car's headlights on a foggy night -
CORRECT ANSWERS tyndall effect
what is the intermolecular force that binds water and molecules together -
CORRECT ANSWERS hydrogen bonds
why won't water and oil mix - CORRECT ANSWERS "like dissolve likes" water is
polar and oil is non-polar
this type of mixture is cloudy - CORRECT ANSWERS colloid
why do cooks often add salt to their boiling water - CORRECT ANSWERS the
salt raises the temperature at which water boils and makes the water hotter
which cooks the food faster
, the term describes the number of moles in a Liter of solution =moles/L -
CORRECT ANSWERS molarity
this type of solution does not hold the maximum amount of solute that a certain
amount of solvent can hold - CORRECT ANSWERS unsaturated
when most solutes are dissolved, heat is absorbed. what type of reaction is this
- CORRECT ANSWERS endothermic
what is an excellent solvent for most solutes - CORRECT ANSWERS water
what does Na1+(aq) mean - CORRECT ANSWERS .1 moles of Ba(NO3)2 in one
liter of solution
it is its molarity or the solution concentration
what do you call the force needed to overcome the interparticle attractions
and"break through" the surface of a liquid? - CORRECT ANSWERS surface
tension
explain how a meniscus is formed in a thin glass tube - CORRECT ANSWERS
because of the strong surface tension
explain why water beads up and why insects or leaves can "float" on water -
CORRECT ANSWERS because hydrogen in water are strong and form a
"surface"
how does a "diluted" solution compare to a concentrated solution - CORRECT
ANSWERS diluted is low molarity, concentration is high molarity
how does a saturated solution compare to a unsaturated solution - CORRECT
ANSWERS saturated is full, unsaturated can hold more
what is it called when a solution has more than the usual maximum amount of
solute. is this solution stable or unstable - CORRECT ANSWERS
supersaturated makes it unstable
what is an excellent solvent for many solutions - CORRECT ANSWERS water
what does molarity mean? What is the formula for finding Molarity? what is the
symbol for molarity - CORRECT ANSWERS molarity is the concentration of a
solution
explain the process of osmosis - CORRECT ANSWERS is the process where
solvent molecules move through a semipermeable membrane from a dilute
solution into a more concentrated solution
and Correct Answers Latest Updated
How can you increase a solid substance's solubility in a solution? - CORRECT
ANSWERS raise the temperature
This term/concept describes why grocers spray fruits and vegetables
periodically to make them look fresh - CORRECT ANSWERS osmosis
what is the reason why icy roads are sprayed with salt in the winter time -
CORRECT ANSWERS the salt lowers the temperature at which the water on the
roads will freeze "Freezing Point Depression"
what do we call the dip at the top of the water level in a graduated cylinder -
CORRECT ANSWERS meniscus
if the maximum amount of solute that can dissolve in 100 mL of water is 24
grams . what would the solution be called if we forced 26 g of solute in it -
CORRECT ANSWERS supersaturated
this type of solution has particles floating at the top and settled at the bottom -
CORRECT ANSWERS suspension
this phenomenon occurs when a laser passes through a colloid and is also
seen in the path of light caused by your car's headlights on a foggy night -
CORRECT ANSWERS tyndall effect
what is the intermolecular force that binds water and molecules together -
CORRECT ANSWERS hydrogen bonds
why won't water and oil mix - CORRECT ANSWERS "like dissolve likes" water is
polar and oil is non-polar
this type of mixture is cloudy - CORRECT ANSWERS colloid
why do cooks often add salt to their boiling water - CORRECT ANSWERS the
salt raises the temperature at which water boils and makes the water hotter
which cooks the food faster
, the term describes the number of moles in a Liter of solution =moles/L -
CORRECT ANSWERS molarity
this type of solution does not hold the maximum amount of solute that a certain
amount of solvent can hold - CORRECT ANSWERS unsaturated
when most solutes are dissolved, heat is absorbed. what type of reaction is this
- CORRECT ANSWERS endothermic
what is an excellent solvent for most solutes - CORRECT ANSWERS water
what does Na1+(aq) mean - CORRECT ANSWERS .1 moles of Ba(NO3)2 in one
liter of solution
it is its molarity or the solution concentration
what do you call the force needed to overcome the interparticle attractions
and"break through" the surface of a liquid? - CORRECT ANSWERS surface
tension
explain how a meniscus is formed in a thin glass tube - CORRECT ANSWERS
because of the strong surface tension
explain why water beads up and why insects or leaves can "float" on water -
CORRECT ANSWERS because hydrogen in water are strong and form a
"surface"
how does a "diluted" solution compare to a concentrated solution - CORRECT
ANSWERS diluted is low molarity, concentration is high molarity
how does a saturated solution compare to a unsaturated solution - CORRECT
ANSWERS saturated is full, unsaturated can hold more
what is it called when a solution has more than the usual maximum amount of
solute. is this solution stable or unstable - CORRECT ANSWERS
supersaturated makes it unstable
what is an excellent solvent for many solutions - CORRECT ANSWERS water
what does molarity mean? What is the formula for finding Molarity? what is the
symbol for molarity - CORRECT ANSWERS molarity is the concentration of a
solution
explain the process of osmosis - CORRECT ANSWERS is the process where
solvent molecules move through a semipermeable membrane from a dilute
solution into a more concentrated solution
