Baxter Ceramics Puzzle 5

4. pots and other articles made from clay hardened by heat
7. the material that acts as a hardener
8. shrinkage comparative indicator of the degree of vitrification
11. action it collapses the porosity and bonds the unmelted ceramic particles to each other by making a eutectic system
14. sand often used in clay bodies
15. inversion the sudden volume change in crystalline quartz particles experience as they pass up and down through 573C.
16. having the structure and form of a crystal
17. derived from or containing glass
18. expansion the tendency of matter to change its shape, area, volume, and density in response to a change in temperature
19. where ceramics and pottery get fired in

1. tension the tendency of liquid surfaces to shrink into the minimum surface area possible
2. a fault that can occur during the firing of ceramic
3. body made from clay, fluxes, hardeners and openers
5. The practice of holding the kiln at final firing temperature for a period of time
6. the state of being thick, sticky, and semi fluid in consistency, due to internal friction
9. used in pottery and sculpture to add a gritty, rustic texture, it reduces shrinkage and aids even drying
10. a mineral form of silica powder used in ceramic glazes and clay bodies
11. alters the vitrification of the clay
12. consists of the three mineral types- clay, silica, and feldspar
13. a micro crystalline form of quartz and is a completely different physical appearance
16. a crystalline form of silica