AP Biology Water and Transpiration

What gives rise to the cohesiveness of water molecules?

• hydrophobic interactions

• nonpolar covalent bonds

• ionic bonds

• hydrogen bonds

• both A and C

The bonds that are broken when water vaporizes are

• ionic bonds.

• hydrogen bonds between water molecules.

• covalent bonds between atoms within water molecules.

• polar covalent bonds.

• nonpolar covalent bonds

Tags

NGSS.MS-PS1-4

Many mammals control their body temperature by sweating. Which property of water is most directly responsible for the ability of sweat to lower body temperature?

• water's change in density when it condenses

• water's ability to dissolve molecules in the air

• the release of heat by the formation of hydrogen bonds

• the absorption of heat by the breaking of hydrogen bonds

• water's high surface tension

Hydrophobic substances such as vegetable oil are

• nonpolar substances that repel water molecules.

• nonpolar substances that have an attraction for water molecules

• polar substances that repel water molecules

• ar substances that have an affinity for water.

• charged molecules that hydrogen-bond with water molecules.

Temperature usually increases when water condenses. Which behavior of water is most directly responsible for this phenomenon?

• the change in density when it condenses to form a liquid or

• reactions with other atmospheric compounds

• the release of heat by the formation of hydrogen bonds

• the release of heat by the breaking of hydrogen bonds

• the high surface tension of water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which type of bond must be broken for water to vaporize?

• ionic bonds

• nonpolar covalent bonds

• polar covalent bonds

• hydrogen bonds

• covalent bonds

Tags

NGSS.MS-PS1-4

Water's high specific heat is mainly a consequence of the

• small size of the water molecules.

• high specific heat of oxygen and hydrogen atoms.

• absorption and release of heat when hydrogen bonds break and form.

• fact that water is a poor heat conductor.

• inability of water to dissipate heat into dry air.

Tags

NGSS.HS-PS3-4

Differentiate between cohesion, adhesion, and surface tension.

A(n) ___________ is any substance that increases the Hydrogen ion concentration of a solution.

The _______ is the substance that is dissolved.