Gabby Clement puzzle 3

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Across
  1. 2. a slow spiral up a pot in a clockwise position
  2. 3. baked clay made from earthenware
  3. 5. the commonest element in the earths crust and sea
  4. 6. the uncompressed one often tears apart
  5. 11. consist of an oxygen atom and hydrogen atom
  6. 14. made up of layers of silica and gibbsite
  7. 17. putting a diagonol pressure particles
  8. 19. something that can be worked easily
  9. 20. removing air from clay
  10. 21. divides the clay grains to lubricate between particles
Down
  1. 1. made to assist clay particles to slide past one another
  2. 4. when the clay becomes loose due to applied stress
  3. 7. can be used for buildings and walls
  4. 8. during this stage water is released into steam
  5. 9. being able to easily shape and mold
  6. 10. mixing clay with water in a circular motion
  7. 12. position themselves with their flat faces opposing pressure
  8. 13. the combined silica gibbsite later by oxygen links
  9. 15. to improve workability of finished clay
  10. 16. often shrink more than pots for a better fit
  11. 18. the drying process occurs due to the loss of water layers