This unit contains 14 lessons on the properties of liquids for fifth graders. It describes materials, supplementary materials, use of process skill terminology, unit objectives, vocabulary, and background information for teachers. Lessons are: (1) "Heaping and Drops/Cohesion"; (2) "Beading of Liquid Columns/Cohesion"; (3) "Reducing the Cohesive Force of Water"; (4) "Understanding Adhesion"; (5) "Understanding Surface Tension"; (6) "Measuring Surface Tension"; (7) "Surface Tension and Plate Size"; (8) "Capillary Action"; (9) "Water Volume versus Ice Volume"; (1) "Density of Water versus Density of Ice"; (11) "Melting Temperature of Ice"; (12) "Boiling Temperature of Water"; (13) "Freezing Temperature of Water"; and (14) "Crossword Puzzle--Unit Vocabulary Review." Each lesson provides a materials list, preparation, procedure, and a worksheet. Two quizzes and a unit test are included. (YP)