16. Change from a solid to a liquid involves what? evaporation or boiling of liquid water molecules.
A An increase in temperature or the vibration of molecules by adding heat to cause
B. The removal of heat causing condensation
C. The removal of heat to cause freezing of liquid
of a solid
D. Increase in temperature to conduct heat causing vibration of molecules to alter the state

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?