1. The fixed temperature at which a gas changes into its liquid state is called the _______.   vaporizaton point   solidification point   fusion point   liquefaction point   Hint Half-n-half Clue   2. 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   fusion   fission   Half-n-half Clue   3. With _______ in pressure, water boils above 100oC.   a decrease   an increase   4. Water vapor is invisible.   True   False   5. The process by which a _______ changes into its gaseous state at a certain fixed temperature by the absorption of heat is called vaporization.   liquid   solid   6. Latent heat = _______ × Specific latent heat.   Mass   Volume   Weight   Half-n-half Clue   7. If 2310 J of heat are released on changing 7 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