Baxter Ceramics Puzzle 5

3. a fault that can occur during the firing of ceramic
7. action it collapses the porosity and bonds the unmelted ceramic particles to each other by making a eutectic system
8. a micro crystalline form of quartz and is a completely different physical appearance
12. a crystalline form of silica
17. having the structure and form of a crystal
19. used in pottery and sculpture to add a gritty, rustic texture, it reduces shrinkage and aids even drying
20. where ceramics and pottery get fired in
21. the state of being thick, sticky, and semi fluid in consistency, due to internal friction

1. The practice of holding the kiln at final firing temperature for a period of time
2. inversion the sudden volume change in crystalline quartz particles experience as they pass up and down through 573C.
4. alters the vitrification of the clay
5. sand often used in clay bodies
6. consists of the three mineral types- clay, silica, and feldspar
9. shrinkage comparative indicator of the degree of vitrification
10. body made from clay, fluxes, hardeners and openers
11. derived from or containing glass
13. expansion the tendency of matter to change its shape, area, volume, and density in response to a change in temperature
14. the material that acts as a hardener
15. pots and other articles made from clay hardened by heat
16. tension the tendency of liquid surfaces to shrink into the minimum surface area possible
18. a mineral form of silica powder used in ceramic glazes and clay bodies