CHEM 210 TEST 4 UPDATED ACTUAL EXAM QUESTIONS CORRECT ANSWERS GRADED A
PLUS
CHEM 210 TEST 4 Comprehensive TEST 2026/2027
Questions and Answers Verified Solutions Latest
Update
Question:
This term/concept describes why grocers spray fruits and vegetables periodically to make them look
fresh.
Answer:
osmosis
Question:
what is the reason why icy roads are sprayed with salt in the winter time.
Answer:
the salt lowers the temperature at which the water on the roads will freeze "Freezing Point
Depression"
Question:
what do we call the dip at the top of the water level in a graduated cylinder.
Answer:
meniscus
Question:
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.
Answer:
supersaturated
,Question:
this type of solution has particles floating at the top and settled at the bottom.
Answer:
suspension
Question:
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.
Answer:
tyndall effect
Question:
what is the intermolecular force that binds water and molecules together.
Answer:
hydrogen bonds
Question:
why won't water and oil mix.
Answer:
"like dissolve likes" water is polar and oil is non-polar
Question:
this type of mixture is cloudy.
Answer:
colloid
Question:
,why do cooks often add salt to their boiling water.
Answer:
the salt raises the temperature at which water boils and makes the water hotter which cooks the food
faster
Question:
the term describes the number of moles in a Liter of solution =moles/L.
Answer:
molarity
Question:
this type of solution does not hold the maximum amount of solute that a certain amount of solvent
can hold.
Answer:
unsaturated
Question:
when most solutes are dissolved, heat is absorbed. what type of reaction is this.
Answer:
endothermic
Question:
what is an excellent solvent for most solutes.
Answer:
water
Question:
, what does Na1+(aq) mean.
Answer:
.1 moles of Ba(NO3)2 in one liter of solution it is its molarity or the solution concentration
Question:
what do you call the force needed to overcome the interparticle attractions and"break through" the
surface of a liquid?
Answer:
surface tension
Question:
explain how a meniscus is formed in a thin glass tube.
Answer:
because of the strong surface tension
Question:
explain why water beads up and why insects or leaves can "float" on water.
Answer:
because hydrogen in water are strong and form a "surface"
Question:
how does a "diluted" solution compare to a concentrated solution.
Answer:
diluted is low molarity, concentration is high molarity
Question:
how does a saturated solution compare to a unsaturated solution.
PLUS
CHEM 210 TEST 4 Comprehensive TEST 2026/2027
Questions and Answers Verified Solutions Latest
Update
Question:
This term/concept describes why grocers spray fruits and vegetables periodically to make them look
fresh.
Answer:
osmosis
Question:
what is the reason why icy roads are sprayed with salt in the winter time.
Answer:
the salt lowers the temperature at which the water on the roads will freeze "Freezing Point
Depression"
Question:
what do we call the dip at the top of the water level in a graduated cylinder.
Answer:
meniscus
Question:
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.
Answer:
supersaturated
,Question:
this type of solution has particles floating at the top and settled at the bottom.
Answer:
suspension
Question:
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.
Answer:
tyndall effect
Question:
what is the intermolecular force that binds water and molecules together.
Answer:
hydrogen bonds
Question:
why won't water and oil mix.
Answer:
"like dissolve likes" water is polar and oil is non-polar
Question:
this type of mixture is cloudy.
Answer:
colloid
Question:
,why do cooks often add salt to their boiling water.
Answer:
the salt raises the temperature at which water boils and makes the water hotter which cooks the food
faster
Question:
the term describes the number of moles in a Liter of solution =moles/L.
Answer:
molarity
Question:
this type of solution does not hold the maximum amount of solute that a certain amount of solvent
can hold.
Answer:
unsaturated
Question:
when most solutes are dissolved, heat is absorbed. what type of reaction is this.
Answer:
endothermic
Question:
what is an excellent solvent for most solutes.
Answer:
water
Question:
, what does Na1+(aq) mean.
Answer:
.1 moles of Ba(NO3)2 in one liter of solution it is its molarity or the solution concentration
Question:
what do you call the force needed to overcome the interparticle attractions and"break through" the
surface of a liquid?
Answer:
surface tension
Question:
explain how a meniscus is formed in a thin glass tube.
Answer:
because of the strong surface tension
Question:
explain why water beads up and why insects or leaves can "float" on water.
Answer:
because hydrogen in water are strong and form a "surface"
Question:
how does a "diluted" solution compare to a concentrated solution.
Answer:
diluted is low molarity, concentration is high molarity
Question:
how does a saturated solution compare to a unsaturated solution.
