Matter is anything that takes up space, has mass, and properties you can observe. Liquids are a form of matter that takes up a definite amount of space and has no definite shape. The purpose of this activity is to learn more about liquids. 1. Create a poster about liquids (on a poster board, iPad, or computer). 2. If your poster was created on poster board, take a . 3. Record a summary of liquids.