Physics and Chemistry CrossWord

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Across
  1. 2. the star located at the centre of the Solar System.
  2. 7. A molecule or atom that accepts electrons in an oxidation-reduction reaction.
  3. 9. The inverse of the Period.
  4. 10. the unit of power flux in the International System of Units.
Down
  1. 1. The heaviest gaz of the world.
  2. 3. Just under the visible light.
  3. 4. The first planet to form in the solar system.
  4. 5. The chemical element with atomic number 7.
  5. 6. a propagating dynamic disturbance of one or more quantities.
  6. 8. the unit of force in the International System of Units.