1) What is the vapor pressure measured when a dynamic equilibrium exists between condensation and evaporation. a) equilibrium vapor pressure b) temperatue c) rate of evaporation d) rate of condensation 2) The energy required to vaporize 1 mole of a liquid. a) surface tension b) cohesion c) boiling point d) molar heat of vaporization 3) The temperature at which the vapir pressure of a liquid is equal to the external pressure a) melting point b) boiling point c) molar mass d) evaporation 4) The temperature at which a liquid boils when the external pressure is at 1 atm a) boiling point b) pressure c) normal boiling point d) melting point 5) is the temperature above which the gas cannot be made to liquefy, no matter how great the applied pressure. a) critical temperature  b) critical pressure  c) critical changes d) critical condensation 6) The minimum pressure that must be applied to bring about liquefaction at the critical temperature a) critical temperature  b) critical pressure  c) critical changes d) critical condensation 7) The energy required to melt 1 mole of a solid substance a) molar mass b) molar heat of fusion c) molar heat of condensation  d) molar heat of sublimatio  8) The energy required to subline 1 mole of a solid a) molar mass b) molar heat of fusion c) heat of condensation  d) molar heat of sublimatio 9) Summarises the conditions at which a substance exist as a should, liquid, or gas. a) phase diagram b) triple point c) phase changes d) heating curve 10) Where all 3 phases meet a) lattice points b) phase diagram c) triple point d) heating curve

Phase changes quiz

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