1What are the physical properties of matter?
Color, melting point, boiling point, density, refractive index.
2What are the chemical properties of matter?
Solubility and Reactions with reagents
3Define Matter
Anything that has mass and takes up space
4What is a phase boundary?
2 liquids that are immiscible and a visible boundary exists, oil floating on water.
5What is an amorphous solid?
A solid that does not have a definite form like glass.
6What is sublimination?
Solid to gas, like dry ice giving off gas effects.
7What is the refractive index of glass?
The degree or measure of bending light.
8What is Refractive index dependent on?
Temperature and wavelength
9How to calculate Refractive index?
Velocity of light in vacuum/Velocity of light in medium
10What is speed of light?
3.00*10^8 m/sec.
11What is the RI for common glass?
1.5
12What is glass examined for?
Color, density, refractive index, elemental composition
13Name all the kinds of glass discussed in class...
Float glass, leaded glass, soda-lime glass, borosillicate glass, tempered glass, safety glass.
14What is the average wavelength of visible light...
550nm (green)
15What relationship does wavelength and energy have?
Inverse relationship
16How many index does glass have? Plastic?
1, 3
17What is normal every day glass? Characteristics?
Soda-lime glass, silicon oxides, sodium carbonate lowers mp.
18Characteristic of float glass?
Cooled on bed of tin.
19Characteristic of Borosilicate glass?
Heat resistant because of boron oxide
20Characteristic of tempered glass?
Used in vehicles, dices when broken.
21What is laminated glass?
Sheet of plastic between 2 sheets of window glass.
22What does a fracture match mean?
A 100% match from 2 glass shards.
23What are the 2 kinds of fracture in glass?
Radial fracture and Concentric fracture
24What are wallner lines
Striations on the edge of broken glass
25What is radial fracture?
Like spokes of a wheel, straight cracked lines coming from origin. Break occured on reverse of right angle.
26What is concentric fracture?
Rings within one another, fracture came from the side of the right angle.
27What are the 4 filament examinations that can be done on a car lamp?
Filament oxidation, glass may be fused onto filament, filament stretching, filament fracture
28What are the 2 kinds of filament fractures?
Rounded ends means hot break, sharp angled ends means cold break.