The Particulate Nature of Matter

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Across
  1. 2. This model is more realistic because it represents better the actual size.
  2. 3. He believed that atoms were the smallest constituents of matter.
  3. 7. Matter is made up of bits of ______.
  4. 9. Matter is made up of _____.
  5. 10. A heat is being absorbed.
  6. 11. A process by which a gas turns to liquid.
  7. 13. The _____ level is a concrete level corresponding to observable things.
  8. 14. A state of matter were the particles is arranged and are packed closely.
  9. 16. The ability of liquids to flow.
  10. 18. It refers to a distinct phase of matter.
  11. 19. It is known as solidification.
  12. 20. Molecules that contain more than two elements.
Down
  1. 1. The _____ level deals with the observation of things that are smaller. It requires the use of microscope.
  2. 4. A process by which liquid turns to gas.
  3. 5. A process by which solid turns to liquid.
  4. 6. This energy acts to overcome the forces of attraction that exist between the particles.
  5. 8. The reverse process of sublimation.
  6. 12. The basic unit of matter.
  7. 15. Democritus believed that atoms is came from the greek word ___.
  8. 17. The proponent of modern atomic theory.