FSHN Exam 1 – Food Science and Human Nutrition – Review Notes and Practice Material
Why does ice float? - ANS ✔✔Bond angle between hydrogen atoms increases
Sublimination - ANS ✔✔occurs when ice is subjected to vacuum
- solid ice turns into water vapor without going through liquid phase
3 types of dispersions - ANS ✔✔- solution
- colloidal
- suspension
What is in water? - ANS ✔✔air, nitrogen, oxygen, CO2, iron, calcium, ions
How many calories are recommended for women a day? - ANS ✔✔2,000
My Plate suggests one's plate should be... - ANS ✔✔50% fruit and veggies, 50% grains and
proteins
What do proteins do? - ANS ✔✔Help you feel full longer
What do carbohydrates do? - ANS ✔✔Give you energy
Water is... - ANS ✔✔polar covalent
What foods are mostly water? - ANS ✔✔Fruits & vegetables, meat, milk
, What has the least amount of water? - ANS ✔✔Flour, oatmeal, cereal, vegetable shortening
What keeps water at room temp? - ANS ✔✔Hydrogen bonding
What affects boiling point of water? - ANS ✔✔High elevation (boil at lower temp/takes longer),
sugar & salt (boil at higher temp)
What are the dispersions from smallest-largest molecules? - ANS ✔✔Solution (sugar and
salt/small), colloidal (medium), suspension (large) MILK IS ALL THREE
What is water activity and how can it be lowered? - ANS ✔✔How much the water is free: in
order to lower it, take some of the water out or add salt/sugar
What percentage of fruits and veggies are produced in California? - ANS ✔✔50%
Which of the following foods has the lowest percentage of water? - ANS ✔✔Vegetable
shortening
Vapor pressure of water if affected by all of the following except? - ANS ✔✔Starch in dissolved
water
Tap water is not regulated as much as bottled water. T/F - ANS ✔✔False
As temp increases, vapor pressure? - ANS ✔✔Increases
Eat a variety of foods, especially fruits & veggies, whole grains and low-fat dairy. T/F - ANS
✔✔True
Why does ice float? - ANS ✔✔Bond angle between hydrogen atoms increases
Sublimination - ANS ✔✔occurs when ice is subjected to vacuum
- solid ice turns into water vapor without going through liquid phase
3 types of dispersions - ANS ✔✔- solution
- colloidal
- suspension
What is in water? - ANS ✔✔air, nitrogen, oxygen, CO2, iron, calcium, ions
How many calories are recommended for women a day? - ANS ✔✔2,000
My Plate suggests one's plate should be... - ANS ✔✔50% fruit and veggies, 50% grains and
proteins
What do proteins do? - ANS ✔✔Help you feel full longer
What do carbohydrates do? - ANS ✔✔Give you energy
Water is... - ANS ✔✔polar covalent
What foods are mostly water? - ANS ✔✔Fruits & vegetables, meat, milk
, What has the least amount of water? - ANS ✔✔Flour, oatmeal, cereal, vegetable shortening
What keeps water at room temp? - ANS ✔✔Hydrogen bonding
What affects boiling point of water? - ANS ✔✔High elevation (boil at lower temp/takes longer),
sugar & salt (boil at higher temp)
What are the dispersions from smallest-largest molecules? - ANS ✔✔Solution (sugar and
salt/small), colloidal (medium), suspension (large) MILK IS ALL THREE
What is water activity and how can it be lowered? - ANS ✔✔How much the water is free: in
order to lower it, take some of the water out or add salt/sugar
What percentage of fruits and veggies are produced in California? - ANS ✔✔50%
Which of the following foods has the lowest percentage of water? - ANS ✔✔Vegetable
shortening
Vapor pressure of water if affected by all of the following except? - ANS ✔✔Starch in dissolved
water
Tap water is not regulated as much as bottled water. T/F - ANS ✔✔False
As temp increases, vapor pressure? - ANS ✔✔Increases
Eat a variety of foods, especially fruits & veggies, whole grains and low-fat dairy. T/F - ANS
✔✔True
