chem 210 final exam prep Questions and
Correct Answers, Complete Verified Solution 2024.
how can you increase a solid substance solubility in a solution?
raise the temperature
This term/concept describes why grocers spray fruits and vegetables periodically
to make them look fresh
osmosis
what is the reason why icy roads are sprayed with salt in the winter time
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
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
supersaturated
this type of solution has particles floating at the top and settled at the bottom
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
tyndall effect
what is the intermolecular force that binds water and molecules together
hydrogen bonds
why won't water and oil mix
"like dissolve likes" water is polar and oil is non-polar
this type of mixture is cloudy
colloid
why do cooks often add salt to their boiling water
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
molarity
this type of solution does not hold the maximum amount of solute that a certain
amount of solvent can hold
unsaturated
when most solutes are dissolved, heat is absorbed. what type of reaction is this
endothermic
what is an excellent solvent for most solutes
water
what does Na1+(aq) mean
.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?
surface tension
explain how a meniscus is formed in a thin glass tube
because of the strong surface tension
explain why water beads up and why insects or leaves can "float" on water
because hydrogen in water are strong and form a "surface"
how does a "diluted" solution compare to a concentrated solution
diluted is low molarity, concentration is high molarity
how does a saturated solution compare to a unsaturated solution
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
supersaturated makes it unstable
what is an excellent solvent for many solutions
water
what does molarity mean? What is the formula for finding Molarity? what is the
symbol for molarity
molarity is the concentration of a solution
explain the process of osmosis
is the process where solvent molecules move through a semipermeable membrane
from a dilute solution into a more concentrated solution
what generally increases the solubility of solid solutes in water? what decreases
solubility
increasing temp increases solubility and decreasing temp decreases solubility
this type of mixture has particles that are larger than those in solutions and are,
therefore, cloudy in appearance
colloid is cloudy in appearance because the particles in the solution are larger
this type of mixture is a true homogeneous mixture
solution- all mixed together, the same
this word describes a substance that can dissolve in a solvent, such as water
solute, solutes dissolve in solvents
the path of sunbeams through dusty air or the path of car held light beams on a
foggy night are examples of what effect
tyndall effect
when you dissolve solutes, heat is generated(heat of solution). for most solutes,
is the process endothermic or exothermic
exothermic, because heat is being released out of the reaction
the states in which water occurs in earth are
solid, liquid, gaseous
The physical property of ice that allows aquatic organisms to survive over the
winter is its
low density
the water molecule is
polar and has polar bonds
in comparison with covalent bonds, hydrogen bonds are
Correct Answers, Complete Verified Solution 2024.
how can you increase a solid substance solubility in a solution?
raise the temperature
This term/concept describes why grocers spray fruits and vegetables periodically
to make them look fresh
osmosis
what is the reason why icy roads are sprayed with salt in the winter time
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
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
supersaturated
this type of solution has particles floating at the top and settled at the bottom
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
tyndall effect
what is the intermolecular force that binds water and molecules together
hydrogen bonds
why won't water and oil mix
"like dissolve likes" water is polar and oil is non-polar
this type of mixture is cloudy
colloid
why do cooks often add salt to their boiling water
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
molarity
this type of solution does not hold the maximum amount of solute that a certain
amount of solvent can hold
unsaturated
when most solutes are dissolved, heat is absorbed. what type of reaction is this
endothermic
what is an excellent solvent for most solutes
water
what does Na1+(aq) mean
.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?
surface tension
explain how a meniscus is formed in a thin glass tube
because of the strong surface tension
explain why water beads up and why insects or leaves can "float" on water
because hydrogen in water are strong and form a "surface"
how does a "diluted" solution compare to a concentrated solution
diluted is low molarity, concentration is high molarity
how does a saturated solution compare to a unsaturated solution
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
supersaturated makes it unstable
what is an excellent solvent for many solutions
water
what does molarity mean? What is the formula for finding Molarity? what is the
symbol for molarity
molarity is the concentration of a solution
explain the process of osmosis
is the process where solvent molecules move through a semipermeable membrane
from a dilute solution into a more concentrated solution
what generally increases the solubility of solid solutes in water? what decreases
solubility
increasing temp increases solubility and decreasing temp decreases solubility
this type of mixture has particles that are larger than those in solutions and are,
therefore, cloudy in appearance
colloid is cloudy in appearance because the particles in the solution are larger
this type of mixture is a true homogeneous mixture
solution- all mixed together, the same
this word describes a substance that can dissolve in a solvent, such as water
solute, solutes dissolve in solvents
the path of sunbeams through dusty air or the path of car held light beams on a
foggy night are examples of what effect
tyndall effect
when you dissolve solutes, heat is generated(heat of solution). for most solutes,
is the process endothermic or exothermic
exothermic, because heat is being released out of the reaction
the states in which water occurs in earth are
solid, liquid, gaseous
The physical property of ice that allows aquatic organisms to survive over the
winter is its
low density
the water molecule is
polar and has polar bonds
in comparison with covalent bonds, hydrogen bonds are
