particles

1. particles of dust

2. particles which are suspended in the water

3. particles which unite to form new compounds

4. aerial particles

5. microscopic particles

6. minute particles of dust

7. subatomic particles

8. subatomic particles

9. the floating particles in the air

10. the elusive atomic particles called mesons

11. the inexplicable movements of atomic particles

12. when the temperature goes down, water particles begin to crystallize