PLANT CELLS AND WATER Flashcards
has a tendency to attract electrons
electronegativity
Perhaps the single
most important property of water is that it is a liquid
over the range of temperatures most compatible with
life
Temperature and Physical State
is used to describe the thermal capacity of a
substance or the amount of energy that can be absorbed
for a given temperature rise
specific heat
The combination of high specific heat and thermal conductivity enables water to absorb and redistribute large amounts of heat energy without correspondingly large increases in temperature.
Absorption and Dissipation of Heat
Energy is required
to cause changes in the state of any substance, such as
from solid to liquid or liquid to gas, without a change
in temperature
Melting and Vaporizing Water
The energy required to convert a substance from the solid to the liquid state
heat of fusion
r the energy required to convert one mole of liquid water to one mole of water vapor
heat of vaporization
encourage solvation by reducing the probability that ions can recombine and form crystal structures
hydration shell
The polarity of molecules can be measured by a
quantity known as the
dielectric constant
The strong mutual attraction between water molecules resulting from hydrogen bonding
cohesion
is the maximum tension that an uninterrupted column of any material can withstand without breaking
tensile strength
Movement of substances from one region to another
translocation
occurs when an external
force, such as gravity or pressure, is applied. As a result, all of the molecules of the substance move in a mass
bulk flow
a directed movement from a region of a high
concentration to a region of lower concentration, but it
is accomplished through the random thermal motion of
individual molecules
diffusion
diffusion of water
osmosis
