List three changes of state during which energy is absorbed.

Three changes of state during which energy is absorbed are : 1. solid to liquid - heat goes into the solid as it melts. 2. Liquid to gas - Heat goes into the liquid as it vaporizes. This change of state includes boiling and evaporation. 3.Solid to gas - this is sublimation. Heat goes into the solid as it sublimates. Change in phase of a material or substance always involves a change of heat whereby heat energy is either absorbed into the material or given up from the material

B. to increase the amount of antibiotics in the body