1. The process by which a _______ changes into its gaseous state at a certain fixed temperature by the absorption of heat is called vaporization.   solid   liquid   2. The process by which a solid changes into its liquid state at a certain fixed temperature by the absorption of heat is called _______.   fusion   solidification   liquefaction   vaporization   Hint Half-n-half Clue   3. Latent heat = _______ × Specific latent heat.   Volume   Mass   Weight   Half-n-half Clue   4. An increase in pressure results in an increase in the freezing point of a substance.   True   False   5. With _______ in pressure, water boils above 100oC.   an increase   a decrease   6. The process by which a liquid changes into its solid state at a certain fixed temperature by the _______ of heat is called solidification.   liberation   absorption   7. Snow is formed due to a change of state from liquid to solid.   True   False