Please select the best answer and click \"submit.\" As heat is added to a sample of water, the kinetic energy of its molecules increases, but the particles remain close together. Which part of the heating curve illustrates this process? Solution Option = D A strong intermolecular bond in which a hydrogen atom in one molecule is attracted to a highly electronegative atom (usually nitrogen or oxygen) in a different molecule. specific heat capacity The amount of heat needed to raise the temperature of 1 g of a substance by 1 degree Celsius. “Heating Curve for Water.”.