Properties of Matter 1. What is meant by the terms mass, volume, weight, and density? 2. a. What is meant by the term characteristic property? b. What is one example of a characteristic property? 3. What is the small particle explanation for why mass is conserved? 4. a. What are the differences in particle motion between solids, liquids, and gases? b. What are the differences in particle spacing between solids, liquids, and gases? 5. What is the difference between the motion of particles in a hot liquid (e.g., a hot cup of water) and a cold liquid (e.g., a cold cup of water)? 6. What is the difference between the motion of particles in a hot solid (e.g., a hot metal bar) and a cold solid (e.g., a cold metal bar)