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

D

Explanation:

because of increasing the temperature will make the molecules move faster and faster till reaching the liquid state

but in answer A it is a conversion between liquid to gas state

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

the answer to this question is 3.