1. The fixed temperature at which a gas changes into its liquid state is called the _______.   solidification point   liquefaction point   fusion point   vaporizaton point   Hint Half-n-half Clue   2. If the specific latent heat of vaporization for water is 2.25 kJ/g, then the amount of heat required to vaporize 32 g of boiling water to steam at 100oC is   72 J   720 J   7200 J   72000 J   Half-n-half Clue   3. The amount of heat required to change a unit mass of a liquid into a gas, without changing its temperature, is referred to as the specific latent heat of _______.   vaporization   fission   fusion   Half-n-half Clue   4. If 1650 J of heat are released on changing 5 g of water at 0oC to ice at 0oC, the specific latent heat of fusion for water is   0.33 J/g   0.66 J/g   330 J/g   660 J/g   Half-n-half Clue   5. When a body gains heat, there is always a rise in its temperature.   True   False   6. With _______ in pressure, water boils above 100oC.   a decrease   an increase   7. Hail is formed due to a change of state from vapour to solid.   True   False