Properties of matter. 

 - Videocassette (VHS)(21 min.) : sd., col. 1/2 in. 
<br/><br/> Part One in the series "Properties Of Matter" on the different properties of solids, liquids and gases. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Liquids--Study and teaching.<br/>Gases--Study and teaching.<br/>Solids--Study and teaching.