Objects made from clay - bricks, tiles, crockery, sinks etc.
Hard, mostly brittle, e.insulators, chem. resist mady via
clay moulding then heating in furnace to ~1000°C
Contains metal compunds (Al, K) and non-metals (Si, O)
Ionic and covalent bonds; Wet clay - H2O mol's slip between
layers, slimy; Fired clay - water driven out, strong bonds form huge property changes - hi-er temp = harder ceramic
Brittle - sharp blow distort layers, like ions repel, cracks