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Glass & Soil Review. What is the state of matter of glass at room temperature?. It is an amorphous solid. The main compounds in glass are __________. Silicon Oxides & Metal Oxides. What is the name of the glass that is made by passing the molten glass through rollers?.
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What is the name of the glass that is made by passing the molten glass through rollers?
The two most important physical properties of glass used for identification are:
True or False • Density is not homogeneous over sheet of glass
True or False, when glass shatters it is easy to reconstruct the original shape.
This type of glass involves a treatment where the glass is heated to 620oC and then cooled rapidly. What is the name of this glass?
Name the type of glass that is used for flat glass, container glass, and electric light bulbs.
This type of conchoidal line appears first when glass is fractured.
For a ______________ fracture, the perpendicular end, faces the surface on which the force originated.
In a forensic laboratory, a technique frequently used to determine the density of glass involves the use of ___________
Stress marks on the edge of a radial crack near the point of impact are ___________ to the side on which the force was applied.
True or False A crater-shaped hole is narrower on the side where the projectile entered the glass.
True or False – It is easy to determine from the size and shape of a hole in glass, whether to was made by a bullet or some other projectile.
A piece of window glass is submerged in vegetable oil. The outline of the glass is visible. When light is shown behind the glass, a bright halo appears near the border of the glass. This bright halo is called a _________.
________ glass has a layer of plastic between two pieces of ordinary window glass.
Name at least one out of three common problems associated with glass analysis (glass comparisons)
Find and measure properties • Associate one glass fragment with another • Minimize or eliminate other sources
The bending of light as it travels through one medium into another is known as ________.
As light goes from the air into a liquid sample, the bending of light is due to a(n) ___________ in velocity of the light.
At 25oC the refractive index of water is 1.333. This means that light travels 1.333x __________ in a vacuum than in water.
______________ solids • Refract a beam of light in two different light-ray components (wavelengths) • Results in double refraction
The numerical difference between these the two refractive indices of a crystalline solid is known as ________________.