age 1 of 40
CHEM 210 Biochemistry Final Exam (2025–2026) –
Portage Learning Verified Q&A
how can you increase a solid substance solubility in a solution?
......ANSWER........raise the temperature
This term/concept describes why grocers spray fruits and
vegetables periodically to make them look fresh
......ANSWER........osmosis
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"
what do we call the dip at the top of the water level in a
graduated cylinder ......ANSWER........meniscus
,age 2 of 40
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
this type of solution has particles floating at the top and settled
at the bottom ......ANSWER........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 ......ANSWER........tyndall effect
what is the intermolecular force that binds water and molecules
together ......ANSWER........hydrogen bonds
why won't water and oil mix ......ANSWER........"like dissolve likes"
water is polar and oil is non-polar
this type of mixture is cloudy ......ANSWER........colloid
,age 3 of 40
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
the term describes the number of moles in a Liter of solution
=moles/L ......ANSWER........molarity
this type of solution does not hold the maximum amount of solute
that a certain amount of solvent can hold
......ANSWER........unsaturated
when most solutes are dissolved, heat is absorbed. what type of
reaction is this ......ANSWER........endothermic
what is an excellent solvent for most solutes
......ANSWER........water
, age 4 of 40
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
what do you call the force needed to overcome the interparticle
attractions and"break through" the surface of a liquid?
......ANSWER........surface tension
explain how a meniscus is formed in a thin glass tube
......ANSWER........because of the strong surface tension
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"
CHEM 210 Biochemistry Final Exam (2025–2026) –
Portage Learning Verified Q&A
how can you increase a solid substance solubility in a solution?
......ANSWER........raise the temperature
This term/concept describes why grocers spray fruits and
vegetables periodically to make them look fresh
......ANSWER........osmosis
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"
what do we call the dip at the top of the water level in a
graduated cylinder ......ANSWER........meniscus
,age 2 of 40
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
this type of solution has particles floating at the top and settled
at the bottom ......ANSWER........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 ......ANSWER........tyndall effect
what is the intermolecular force that binds water and molecules
together ......ANSWER........hydrogen bonds
why won't water and oil mix ......ANSWER........"like dissolve likes"
water is polar and oil is non-polar
this type of mixture is cloudy ......ANSWER........colloid
,age 3 of 40
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
the term describes the number of moles in a Liter of solution
=moles/L ......ANSWER........molarity
this type of solution does not hold the maximum amount of solute
that a certain amount of solvent can hold
......ANSWER........unsaturated
when most solutes are dissolved, heat is absorbed. what type of
reaction is this ......ANSWER........endothermic
what is an excellent solvent for most solutes
......ANSWER........water
, age 4 of 40
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
what do you call the force needed to overcome the interparticle
attractions and"break through" the surface of a liquid?
......ANSWER........surface tension
explain how a meniscus is formed in a thin glass tube
......ANSWER........because of the strong surface tension
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"
