CAMPBELL BIOLOGY CHAPTER 3
CORRECT 100%
polar molecule - ANSWERmolecule with an unequal distribution of charge, resulting
in the molecule having a positive end and a negative end
4 emergent properties of water - ANSWER1. Cohesion
2. Temperature Moderation
3. Expands upon freezing
4. Versatile as solvent
cohesion - ANSWERtendency of molecules of the same kind to stick to one another
adhesion - ANSWERattraction between molecules of different substances; in plants,
attraction between unlike molecules
surface tension - ANSWERa measure of how difficult it is to stretch or break the
surface of a liquid
moderation of temperature by water - ANSWER-absorbs heat from air that is warmer
and releasing the stored heat to the air that is cooler.
-high specific heat/ high heat of vaporization
kinetic energy - ANSWERenergy of motion
heat - ANSWERa form of energy that is transferred by a difference in temperature
temperature - ANSWERa measure of the intensity of heat in degrees, reflecting the
average kinetic energy of the molecules, regardless of volume.
calorie - ANSWERunit of heat defined as the quantity of heat required to raise the
temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
joule - ANSWERsi unit of energy
acid - ANSWERa substance that increases the hydrogen ion concentration of a
solution
base - ANSWERa substance that reduces the hydrogen ion concentration of a
solution
pH - ANSWERa value that indicated the acidity or alkalinity of a solution on a scale
of 0-14, based on the proportion of H+ ions.
buffer - ANSWERsubstance that maintains a fairly constant pH in a solution by
accepting H+ ions when their levels rise and donating H+ ions when their levels fall
CORRECT 100%
polar molecule - ANSWERmolecule with an unequal distribution of charge, resulting
in the molecule having a positive end and a negative end
4 emergent properties of water - ANSWER1. Cohesion
2. Temperature Moderation
3. Expands upon freezing
4. Versatile as solvent
cohesion - ANSWERtendency of molecules of the same kind to stick to one another
adhesion - ANSWERattraction between molecules of different substances; in plants,
attraction between unlike molecules
surface tension - ANSWERa measure of how difficult it is to stretch or break the
surface of a liquid
moderation of temperature by water - ANSWER-absorbs heat from air that is warmer
and releasing the stored heat to the air that is cooler.
-high specific heat/ high heat of vaporization
kinetic energy - ANSWERenergy of motion
heat - ANSWERa form of energy that is transferred by a difference in temperature
temperature - ANSWERa measure of the intensity of heat in degrees, reflecting the
average kinetic energy of the molecules, regardless of volume.
calorie - ANSWERunit of heat defined as the quantity of heat required to raise the
temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
joule - ANSWERsi unit of energy
acid - ANSWERa substance that increases the hydrogen ion concentration of a
solution
base - ANSWERa substance that reduces the hydrogen ion concentration of a
solution
pH - ANSWERa value that indicated the acidity or alkalinity of a solution on a scale
of 0-14, based on the proportion of H+ ions.
buffer - ANSWERsubstance that maintains a fairly constant pH in a solution by
accepting H+ ions when their levels rise and donating H+ ions when their levels fall
