1. If the specific latent heat of vaporization for water is 2.25 kJ/g, then the amount of heat required to vaporize 20 g of boiling water to steam at 100oC is   45 J   450 J   4500 J   45000 J   Hint Half-n-half Clue   2. 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 _______.   vaporization   fission   fusion   Half-n-half Clue   3. Hail is formed due to a change of state from vapour to solid.   True   False   4. 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.   latent   sensible   specific   Half-n-half Clue   5. The boiling point of salt water is less than 100oC.   True   False   6. 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   7. 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 _______.   fission   vaporization   fusion   Half-n-half Clue