Chapter 10- Water as a unique chemical Flashcards
what states can water be found in
solid liquid and gas
how are molecules organized in water in a solid state
a regular way but can vibrate in s fixed position
how are molecules organized in water in a liquid state
molecules are fairly close together but can move around each other
how are molecules organized in water in a gas state
molecules are far apart and aren’t bonded. arranged disorganized and move around rapidly in different directions
what is sublimation
when a solid transitions from solid to gas without becoming a liquid
what is deposition
when a gas transitions to a solid without becoming a liquid
what is potable water
water that is suitable for drinking
what is one special property of water
it can do hydrogen bonding
what are the trends in group 16 hydrides
elements in this group can bond with hydrogen to form hydrides
what is waters melting point
0 degrees
what is waters boiling point
100 degrees
why does ice float in liquid water
ice has a lower density
what is density a measurement of
the mass of a substance
how to calculate density
density= mass(g) / volume (cm cubed)
what is heat capacity
a measure of a substances ability to absorb and store heat energy
what is specific heat capacity
a measure of the energy required to raise 1g of substance by 1 degrees
how is specific heat capcity reported
in units of J g-1 degrees celcius
what is latent heat
the energy absorbed by 1 mole of substance as it changes state from solid to liquid and liquid to gas
what are the two types of latent heat
latent heat fusion and latent heat vaporisation
what is the latent heat of fusion of water
6
what is the latent heat of vaporization of water
40.7
how to calculate latent heat
heat energy in kJ= amount of substance (in mol) x latent heat value
q= n x L
