Thus when water molecules are close together, their positive and negative regions are attracted to the oppositely-charged regions of nearby molecules. The force of attraction, shown here as a dotted line, is called a hydrogen bond. The energy required to break multiple hydrogen bonds causes water to have a high heat of vaporization; that is, a large amount of energy is needed to convert liquid water, where the molecules are attracted through their hydrogen bonds, to water vapor, where they are not.
âangstâ: synonyms and related words: 1  agitation. 2  alarm. 3  anxiety. 4  apprehension. 5  consternation. 6  discomfit. 7  discomfort. 8  misgiving. 9  nerve. 10  oppression. 11  overwork. 12  panic attack. 13  perturbation. 14  preoccupation. 15  restive. 16  strain. 17  tizzy. 18  trepidation. 19  uneasiness. 20  vexation.
Although the term angina alone usually denotes angina pectoris (a type of chest pain due to obstruction of the coronary artery), angina by itself can also mean any spasmodic, choking, or suffocative pain, with an anatomic adjective defining its focus; so, in this case, spasmodic pain in the abdomen.