CAMPBELL BIOLOGY ACTUAL PAPER 2026
FULL SOLUTION QUESTIONS AND ANSWERS
VERIFIED
◉ What is cohesion? Answer: Collectively, hydrogen bonds hold
water molecules together, a phenomenon called cohesion.
◉ What is adhesion? Answer: An attraction between different
substances, for example, between water and plant cell walls.
◉ Compare cohesion and adhesion. Answer: Adhesion is the
attractive force between unlike substances. Cohesion is an attractive
force between particles of the same kind. Together, adhesion and
cohesion enable water molecules to move upward through narrow
tubes against the force of gravity.
◉ What is surface tension? Answer: A measure of how hard it is to
break the surface of a liquid. Related to cohesion.
◉ Why does water have high surface tension? Answer: The cohesive
forces between liquid molecules are responsible for the
phenomenon known as surface tension. The molecules at the surface
do not have other like molecules on all sides of them and
, consequently they cohere more strongly to those directly associated
with them on the surface.
◉ What's the difference between heat and temperature? Answer:
Heat is a measure of the total amount of kinetic energy due to
molecular motion. Temperature measures the intensity of heat due
to the average kinetic energy of motion.
◉ Does water have a high or low specific of heat? Answer: Water
resists changing its temperature because of its high specific heat. Its
high specific of heat can be traced to hydrogen bonding.
-Heat is absorbed when hydrogen bond break
-Heat is released when hydrogen bond form
◉ How does water's high specific heat capacity affect us? Answer:
The high specific heat of water will effect the climate because it is
able to store a large amount of heat, which means that there is less
heat in the atmosphere. Hence the weather is cooler.
◉ Why does ice float? Answer: Ice floats in liquid water because
hydrogen bonds in ice are more "ordered," making ice less dense.
◉ Why does water serve as a good solvent? Answer: Water is a
versatile solvent due to its polarity, which allows it to form hydrogen
bonds easily.
FULL SOLUTION QUESTIONS AND ANSWERS
VERIFIED
◉ What is cohesion? Answer: Collectively, hydrogen bonds hold
water molecules together, a phenomenon called cohesion.
◉ What is adhesion? Answer: An attraction between different
substances, for example, between water and plant cell walls.
◉ Compare cohesion and adhesion. Answer: Adhesion is the
attractive force between unlike substances. Cohesion is an attractive
force between particles of the same kind. Together, adhesion and
cohesion enable water molecules to move upward through narrow
tubes against the force of gravity.
◉ What is surface tension? Answer: A measure of how hard it is to
break the surface of a liquid. Related to cohesion.
◉ Why does water have high surface tension? Answer: The cohesive
forces between liquid molecules are responsible for the
phenomenon known as surface tension. The molecules at the surface
do not have other like molecules on all sides of them and
, consequently they cohere more strongly to those directly associated
with them on the surface.
◉ What's the difference between heat and temperature? Answer:
Heat is a measure of the total amount of kinetic energy due to
molecular motion. Temperature measures the intensity of heat due
to the average kinetic energy of motion.
◉ Does water have a high or low specific of heat? Answer: Water
resists changing its temperature because of its high specific heat. Its
high specific of heat can be traced to hydrogen bonding.
-Heat is absorbed when hydrogen bond break
-Heat is released when hydrogen bond form
◉ How does water's high specific heat capacity affect us? Answer:
The high specific heat of water will effect the climate because it is
able to store a large amount of heat, which means that there is less
heat in the atmosphere. Hence the weather is cooler.
◉ Why does ice float? Answer: Ice floats in liquid water because
hydrogen bonds in ice are more "ordered," making ice less dense.
◉ Why does water serve as a good solvent? Answer: Water is a
versatile solvent due to its polarity, which allows it to form hydrogen
bonds easily.
