1. In an experiment, a thin copper wire with weights at either end is placed on a supported block of ice. The thin wire is observed to pass through the ice. The experiment shows that an increase in _______.   pressure causes the freezing point of water to rise above 0o   specific latent heat causes the freezing point of water to drop below 0o   pressure causes the freezing point of water to drop below 0o   specific latent heat causes the freezing point of water to rise above 0o   Hint Half-n-half Clue   2. In an experiment, a thin copper wire with weights at either end is placed on a supported block of ice. The thin wire is observed to cut through the ice. The phenomenon where the ice above the wire refreezes is called _______.   subtraction   regelation   regeneration   sublimation   Half-n-half Clue   3. When a body gains heat, there is always a rise in its temperature.   True   False   4. The amount of heat required to change a unit mass of a solid into a liquid, without changing its temperature, is referred to as the specific latent heat of _______.   fusion   fission   vaporization   Half-n-half Clue   5. Fusion point and _______ occur at the same temperature.   solidification point   vaporizaton point   fusion point   boiling point   Half-n-half Clue   6. Water vapor is invisible.   True   False   7. When the cooling curve for naphthalene is plotted on a graph of temperature (in oC) vs. time (in minutes), the following three regions are observed: in the first 2 minutes, the temperature drops from 90oC to 80oC; in the next 6 minutes, the temperature remains constant at 80oC; and in the last 4 minutes, the temperature falls from 80oC to 60oC. The naphthalene is a liquid in the time interval from _______.   2 to 8 minutes   0 to 2 minutes   8 to 12 minutes   Half-n-half Clue