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.
GIST is an abbreviation for GastroIntestinal Stromal Tumour. 1  Gastrointestinal means that it occurs in the digestive tract, anywhere from the oesophagus to the rectum i.e. the gullet, stomach, intestines. So, for example, a GIST in or near the colon is not cancer of the colon because it does not occur in the functioning part of the colon but in the tissues which support the colon.