water properties Flashcards
water is
is a liquid at room temperature (25oC or 77oF) and
normal atmospheric pressure;
✓ has an anomalously high boiling point;
✓ expands when freezes.
100 degree boiling point
the solid form of water has___
all H bonds and less kinetic energy
the liquid form of water has ___
some h bonds in tacts and more kinetic energy than its solid form
the gaseous form of liquid has___
no h bonds in tact and the most kinetic energy compared to liquid and solid forms
what is specific heat
the quantity of heat energy that must be applied to increase the temperature of 1g of a substance by 1 degree Celsius
water has a specific heat of what ?
1cal / gC
one of the highest known of any liquid
what are some climate implications of water ?
Oceans absorb enormous quantities of heat
– Heat is absorbed when water
evaporates
– Heat is released when water
condenses
surface tension
energy required to stretch or penetrate the surface of a liquid
viscosity
resistance to motion
does water have a high or low viscosity
LOW
is water compressible
no, its relatively incompressible
what are the densities of water at different temps ?
(don’t have to know the exact amounts but you should know their rankings)
ice 0C- 0.917c/cm^3
water 0C- 0.99987 g/cm^3
water 3.98C-1 gm/cm^3
water 20C- 0.99823 g/cm^3
water is a ___ molecule with ___ bonds
polar : polar covalent
water is takes time to boil because….
it take a lot of energy to break h bonds
because of of waters high heat capacity the global temperatures have a ___ range in temp
small
