Science Crossword

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Across
  1. 4. the condition of being transparent.
  2. 8. Bonds chemical bond that involves the sharing of electron pairs between atoms
  3. 9. Chemical
  4. 10. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere
  5. 12. the regions of the surface, atmosphere, and hydrosphere of the earth
  6. 14. the regions of the surface, atmosphere, and hydrosphere of the earth
  7. 16. Chemical reaction thats is releases energy
  8. 18. Forms into a gas
  9. 19. a part or aspect of something abstract, especially one that is essential or characteristic.
  10. 20. basic unit of a chemical element
Down
  1. 1. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
  2. 2. all the waters on the earth's surface, such as lakes and seas
  3. 3. to pass into or through a substance
  4. 5. falling from the atmosphere
  5. 6. the name given to a horizontal row of the periodic table.
  6. 7. a solid material that is typically hard, shiny,
  7. 11. water that collects as droplets on a cold surface when humid air is in contact with it.
  8. 13. What Term us up on the periodic table
  9. 15. Off Runs off buildings
  10. 17. Chemical reaction that absorbs energy