1. The fixed temperature at which a gas changes into its liquid state is called the _______.   fusion point   solidification point   liquefaction 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 16 g of boiling water to steam at 100oC is   36 J   360 J   3600 J   36000 J   Half-n-half Clue   3. Hail is formed due to a change of state from vapour to solid.   True   False   4. Burns are more injurious when caused by steam than when caused by boiling water.   True   False   5. An increase in pressure results in an increase in the freezing point of a substance.   True   False   6. Fusion point and _______ occur at the same temperature.   boiling point   solidification point   fusion point   vaporizaton point   Half-n-half Clue   7. With _______ in pressure, water boils above 100oC.   a decrease   an increase