Download Why does ice stick to your skin?

Why does ice stick to your
skin?
Why does ice stick to your skin?
• If the ice is cold enough it will absorb
enough heat from the water on your
hand and the moisture in your hand, for
the water to freeze, and for some of the
moisture in your skin to freeze.
• These two form a solid bond to the ice.
Formation of Ice
• To know about why ice stick to your
skin we have to first know about the
formation of ice.
• On the outer level we say that when we
cool the water to certain temperature it
turns to ice but on molecular basis it is
something different.
Molecules of Water a Tetrahedron.
• We know that the water (H2O)
is made up of two atoms of
hydrogen and one atom of
oxygen.
• But oxygen has the two extra
pairs of electrons which are
known as lone pairs.
• And they make the molecules
of water a tetrahedron.
Hydrogen Bonding
• When one of the lone
pairs of oxygen goes
out and attaches with
the hydrogen atom of
the other neighboring
molecule then the
interaction of
molecules start which
is known as the
hydrogen bonding.
• Every molecule in the
water is attached with
the nearby molecule
through hydrogen
bonding.
Water Flow
• So when the water is
in liquid state every
molecule change its
interaction and move
on making new
connection with new
molecule which
results in water flow.
Three Dimensional Hydrogen Bonding
• But when temperature is
very low in the case of ice
it cannot break old
connection and form new
one.
• Now the molecules are
not in the condition to
change their interactions
so it remains on one
place forming a three
dimensional hydrogen
bonding.
Why does ice stick to your skin?
• On the surface of ice some oxygen atoms
and hydrogen atoms are left facing outwards
which causes them not to connect with the
other molecules to form hydrogen bond.
• So they are looking for a partner to form the
bond and when a surface that is able to form
this bond comes in contact with the ice
surface it will stick to that, like our skin.
• Our skin has high moisture content and very
appropriate to form the bond with these
atoms that is why it sticks to your skin.
References
• http://www.letusfindout.com/why-does-ice-stick-toyour• skin/http://witcombe.sbc.edu/water/chemistrystructu
re.html
• http://www.lsbu.ac.uk/water/clusters.html
• http://www.elmhurst.edu/~chm/vchembook/163boilin
gpt.html
• http://www.lsbu.ac.uk/water/equil.html
• http://www.phschool.com/science/biology_place/bio
coach/biokit/water.html
• http://bcs.whfreeman.com/thelifewire/content/chp02/
02020.html