Water
Quick Resources
https://youtu.be/3jwAGWky98c
Water’s Properties
Cohesion
Cohesion refers to attraction to other water
molecules.
Responsible for surface tension
a measure of the force necessary to stretch
not strong enough to break the or break the surface of a liquid
surface tension of water
property allowing liquid to resist external
force
Water 1
, Adhesion
Adhesion refers to attraction to other
substances.
Water is adhesive to any substance
with which it can form hydrogen
bonds.
picture of lack of adhesion. no attraction
between the leaf and the water molecules. the
leaf is hydrophobic.
Capillary action
Trees have specialized
structures to transport
water: xylem and phloem
“plumbing”
Water molecules are
“dragged” from the roots to adhesion to
the top of the tree by the straw and
capillary action and as some
water goes
cohesion
up, the rest is
thanks to hydrogen pulled thanks
bonding to cohesion.
evaporation
pulls the water
up. adhesion
between the
water and
walls resist
downward
Water 2
Quick Resources
https://youtu.be/3jwAGWky98c
Water’s Properties
Cohesion
Cohesion refers to attraction to other water
molecules.
Responsible for surface tension
a measure of the force necessary to stretch
not strong enough to break the or break the surface of a liquid
surface tension of water
property allowing liquid to resist external
force
Water 1
, Adhesion
Adhesion refers to attraction to other
substances.
Water is adhesive to any substance
with which it can form hydrogen
bonds.
picture of lack of adhesion. no attraction
between the leaf and the water molecules. the
leaf is hydrophobic.
Capillary action
Trees have specialized
structures to transport
water: xylem and phloem
“plumbing”
Water molecules are
“dragged” from the roots to adhesion to
the top of the tree by the straw and
capillary action and as some
water goes
cohesion
up, the rest is
thanks to hydrogen pulled thanks
bonding to cohesion.
evaporation
pulls the water
up. adhesion
between the
water and
walls resist
downward
Water 2
