Ceramics chem Flashcards
1
Q
How are ceramics formed
A
They are usually formed by heating and then cooling
2
Q
During the heating
A
When clay is heatedChemical reactions occur and new compounds are formed
3
Q
During the cooling
A
Crystals form and blind together in the ceramic
4
Q
The longer the cooling….
A
The bigger the crystals are since the atoms have had time to create a lattice structure
5
Q
Lattice structure:
A
Large number of atoms all joined together in a fixed regular pattern
6
Q
They are stiff because….
A
Many atoms are bonded together with strong bonds in a rigid structure
7
Q
They have high melting points because….
A
Of the strength of the atoms
8
Q
Glass is different because….
A
They do not have a regular pattern
9
Q
All have similar physical properties
A
Hard Stiff Strong when compressed High melting points Heat resistant Good insulators of heat and electricity Very un reactive
