The Emergent Properties Of Water
Concept 3.2 4 emergent properties of h2o contribute to Earth's suitability for life
Organisms depend on the cohesion of water molecules.
● Collectively, hydrogen bonds hold water together, a phenomenon called cohesion.
● Cohesion among water molecules plays a key office in transporting water and dissolved
nutrients against gravity in plants.
○ Water molecules move upwardly from the roots to the leaves of a plant through
water-conducting vessels.
○ Every bit water molecules evaporate from a foliage, other water molecules from vessels in
the foliage replace them.
○ Hydrogen bonds cause h2o molecules leaving the vessels to tug on molecules
farther down.
○ This upward pull is transmitted down to the roots.
○ Adhesion, the clinging of one substance to some other, also contributes, equally water
adheres to the walls of the vessels.
● Surface tension, a measure of the force necessary to stretch or pause the surface of a
liquid, is related to cohesion.
○ Water has a greater surface tension than near other liquids because hydrogen
bonds amidst surface water molecules resist stretching or breaking the surface.
○ Water behaves as if covered by an invisible motion-picture show.
○ Some animals can stand, walk, or run on water without breaking the surface.
Water moderates temperatures on Earth.
● Westater moderates air temperatures past absorbing heat from warmer air and releasing the
stored heat to cooler air.
● Water can absorb or release relatively large amounts of heat with only a slight modify in
its own temperature.
● Atoms and molecules take kinetic energy, the free energy of motion, because they are
always moving.
○ The faster a molecule moves, the more than kinetic free energy it has.
● Heat is a mensurate of the total quantity of kinetic energy due to molecular motion in a
body of matter.
● Temperature measures the intensity of rut in a torso of affair due to the average
kinetic energy of molecules.
○ As the average speed of molecules increases, a thermometer records an
increment in temperature.
The Emergent Properties Of Water,
Source: https://www.studocu.com/en-us/document/george-washington-university/intro-bio-cells-molecules/concept-32-four-emergent-properties-of-water-contribute-to-earths-suitability-for-life-google-docs/16752291
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