Glass Attack
These are two of the many properties of Glass:
This is likely the type of glass we used in our glass blowing lab
Soda Lime
This recycled product is added to glass.
This is the reason that glass doesn’t turn into a liquid
Amorphous
This type of glass is expensive and sparkly:
Lead Alkali Glass
or Fused silica
Ceramics have this type of structure:________, while glass has this type of structure: _______
Crystalline, amorphous
The color for the glass bead came from this variable
Internal reflection is an important property of glass for this use…
fiber optics
Glass annealing ovens are called this
The intermediate is needed for this reason:
Inorganic nonmetallic materials produced from earth materials is a good definition of this word
Ceramics
Pouring molten glass into water (like Prince Rupert Drop) is an example of this heat treatment
Quench
Glass plants and manufactures can check their glass for stress and fractures by using this
This is the reason that material is likely to break due to rapid temperature change
Thermal Shock
Glass formers need modifers because of this reason:
High melting Point
This type of bond holds ceramic material together and this type holds glass together
ionic Bonds, covalent bonds
This how you temper glass:
(don't worry about saying what is)
You heat it until....
Then you...
You heat it until... it's soft but NOT molten
Then you... quench it in water
Glass is strong in __ and weak in ____
Compression, Tension
We performed two heat treatments in the lab. ___________ makes glass stronger and _____________ removes any cracks and stress in the material
Tempering, Annealing
Gorilla glass is made by this company
Who is corning
Pyrex used to be made out this type of glass, but now is made out of this type of glass
Borosilicate, soda lime
This type of material is found inside Mrs. Ortiz's kiln (as well as on space ships!). It can withstand amazingly high temperatures.
Refractory
(Refractory materials)
What is an advantage and a disadvantage of tempered glass?
Very strong, but cant be drilled or cut without breaking into tiny pieces
The amount of expansion per unit length per degree change in Celsius is known as this:
Coefficient of Thermal Expansion. The lower the coefficient, the less likely it is to break!