1. The heat gained or lost by a body during a change of state is referred to as _______ heat since there is no change in temperature.   sensible   specific   latent   Hint Half-n-half Clue   2. Water vapor is invisible.   True   False   3. 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 _______.   regelation   regeneration   subtraction   sublimation   Half-n-half Clue   4. 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 _______.   specific latent heat causes the freezing point of water to drop below 0o   pressure causes the freezing point of water to drop below 0o   pressure causes the freezing point of water to rise above 0o   specific latent heat causes the freezing point of water to rise above 0o   Half-n-half Clue   5. The heat gained or lost by a body during a change of state is the product of its _______ and the specific latent heat.   Weight   Mass   Volume   Half-n-half Clue   6. 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 _______.   0 to 2 minutes   8 to 12 minutes   2 to 8 minutes   Half-n-half Clue   7. If the specific latent heat of vaporization for water is 2.25 kJ/g, then the amount of heat required to vaporize 24 g of boiling water to steam at 100oC is   54 J   540 J   5400 J   54000 J   Half-n-half Clue