Emily Frentzel - Puzzle 5

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Across
  1. 3. alters the vitrification temperature of they clay, more specifically to ceramics flux lowers the amount of heat needed to melt silica
  2. 4. melts at 2102 - 237f
  3. 5. melts at 2012 - 219f
  4. 9. they interact with the glass forming silica
  5. 12. often in clay bodies instead of grog or to augment grog
  6. 13. fluxes like calcium and magnesium oxides
  7. 15. is the mineral form if silica powder used in ceramic glazes and clay bodies
  8. 16. have individual characteristics although as fluxes they have properties in common
  9. 17. FeO
  10. 18. ZnO
  11. 19. highly refractory and has a very high melting temperature
  12. 20. does not fire too vitreous
Down
  1. 1. are employed as grinding media in ball mills
  2. 2. all melt at 3110f
  3. 6. up to 25% of a clay body
  4. 7. not for stoneware, is a microcrystalline form of quartz and has a completely different physical appearance
  5. 8. is made of four components - clays, fluxes, hardeners, & openers
  6. 10. add hardness and whiteness to the clay
  7. 11. boron oxide and bismuth oxide
  8. 14. involving RO fluxes tend to soften more quickly