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Cohesion
Water molecules will stick to other
water molecules, the reason why
water forms droplets
Question
Cohesion
How is cohesion different from adhesion?
Adhesion
Water molecules stick to certain
surfaces like glass
Question
Adhesion
Give an example of the adhesion of water in
your everyday life.
Water Molecule
H2O is the chemical formula, this
means that each molecule is made up
of 2 Hydrogen atoms and 1 oxygen
atom
Question
Water Molecule
What is a molecule?
Polarity
The oxygen end of a water molecule is
negatively charged and the hydrogen ends are
positively charged; this causes water
molecules to stick together (positive to
negative)
Question
Polarity
How is the polarity of water related to the
cohesion of water?
Surface Tension
The molecules at the surface of the
water "stick together" to form a type of
'skin' on the water, strong enough to
support very light objects
Question
Surface Tension
How is surface tension of water related to the
cohesion of water?
Capillary Action
The ability of a narrow tube to draw
a liquid upwards against the force
of gravity
Question
Capillary Action
Describe one practical use of capillary action in
your everyday life.
Specific Heat
The amount of energy required to raise
the temperature of 1 gram of a
substance by 1 degree Celsius. Water
has a high specific heat. It takes a lot of
energy to raise the temperature of water.
Question
Specific Heat
What does it mean that water has a high specific
heat?