chapter 10 section 4 notes

Question 1

sublimation

Answer 1

the change of state from a solid directly ot a gas

Question 2

eexamples of substances that sublime

Answer 2

dry ice and iodine

Question 3

what is meant by normal freezing point of a substance

Answer 3

temperature at which the solid and liquid are in equilibrium at 1 atm

Question 4

explain how the attractive forces between the particles in a liquid are rleated to the equilibrium vapor pressure of that liquid

Answer 4

the stronger these attractive forces are, the smaller the percentage of liquid particales that can evaporate at any givern temperature.

Question 5

explain the relationship between atomospheric pressure and the actual boilng point of that liquid

Answer 5

a liquid boils when its vapor pressure equals the pressure of the atomsphere

Question 6

exaplain the relationsihp between the molar enthalpy of fusion of a solid and the strength of attraction between that solid’s particles

Answer 6

the greater the attraction, the greater the energy required to overcome= higher molar enthalpy of fusion.