21.  The substances undergoing the change are called reactants and the substances formed are called products.

22.  We have already seen that when a system undergoes a change at constant pressure the energy transferred as heat is called the enthalpy change.

23.  The mucosa of the pelvic ileal reservoir undergoes adaptive changes -- inflammatory, architectural and metaplastic -- on exposure to the faecal stream.

24.  The governmental, social, economic, military, legal, educational and ecclesiastical structures of the kingdom underwent dramatic changes.

25.  The result of this was that the side underwent drastic changes for the next game, with none of the Youth Cup winning side included.

26.  Agriculture was undergoing considerable change and she saw as one of her main tasks the need to ensure that the UK farming industry benefits in full from CAP.

27.  The former Havana nightclub in Linthorpe Road, Middlesbrough, is set to undergo a change of image after Fred Veazey was yesterday granted a provisional public entertainment licence.

28.  It has undergone drastic changes over the past few years.

29.  Although it has been solidly Republican, Florida has undergone demographic changes that have apparently made it less conservative than in years past.