Solids, Liquids Gases and subatomic particles

1234567891011121314
Across
  1. 4. The state of matter with a fixed shape and volume. (5)
  2. 7. The process of a liquid turning into a gas at the surface. (10)
  3. 9. The state of matter that spreads out to fill its container. (3)
  4. 10. The property of subatomic particles that determines their electrical behavior. (6)
  5. 12. A subatomic particle with a positive charge. (6)
  6. 13. The state of matter that flows and takes the shape of its container. (6)
  7. 14. The process of a liquid turning into a solid. (8)
Down
  1. 1. A subatomic particle with a negative charge. (8)
  2. 2. A subatomic particle with no charge. (7)
  3. 3. The type of energy associated with the motion of particles. (7)
  4. 5. Needed to change the state of matter or increase particle motion. (6)
  5. 6. The amount of matter in an object. (4)
  6. 8. The process of a solid turning into a liquid. (7)
  7. 11. The smallest unit of matter that retains the properties of an element. (4)