Chapter 7 Food Science

The chemical formula for water is ____.

• HO

• H₂O

• H₂O₂

• H₃O

____ bonds are formed within a water molecule.

• Intermolecular

• Hydrogen

• Nonpolar Covalent

• Polar Covalent

An advantage of cooking with steam is:

• Foods are more flavorful

• it is faster than boiling when pressure is added

• food is more nutritious

• all of the above

The force of the weight determined by the pull of earth's gravity pressing down on a surface is:

• atmospheric pressure

• cohesion

• adhesion

• altitude

water performs all the following functions in body except

• serving as a reactant for chemical reactions

• dissolving and transporting nutrients

• maintaining body temperature

• providing energy

lemon juice is example of

• bound water

• free water

• hydrates

• all of the above

cooled boiled water has a flat taste because

• cooking destroys bacteria

• there is a lower dissolved oxygen level

• boiled water contains more impurities

• all of the above

The boiling point of water at sea level is

• 100°F

• 32°F

• 100 °C

• 32 °C

In which state is water most dense?

• gas

• liquid

• it is equally dense in all states

• solid

in a hydrogen bond, the ______

• hydrogen of one atom is attracted to hydrogen of another

• hydrogen end of the molecule is slightly negative

• hydrogen of one atom is attracted to oxygen of another

• oxygen of the molecules is slightly positive