Across
- 4. where clay is fired
- 6. how many types of silica are there
- 7. A mixture of silica and other oxides form what.
- 11. what you must do to attach pieces of clay together
- 12. The 4 components of clay are clays, fluxes, hardeners and...
- 13. secondary clays
- 14. without silica there won't be a what
- 16. Combination of silica, aluminum oxide and water
- 17. what type of glass is made when silica is melted
- 19. unfired pottery
- 20. What is 60% silica
Down
- 1. A glass former
- 2. What chemists call clay.
- 3. Formed from volcanic ash
- 5. Purest of primary clays
- 8. SiO2
- 9. silica occurs naturally as quartz rock, flint and...
- 10. These alter melting temperature
- 15. The 4 components of clay are clays, fluxes, openers and...
- 18. highly plastic secondary clay