Glass: Polymer Science

Which is not a characteristic of most glass?

• Crystalline
• Durable
• Inexpensive
• Transparent

The terms crystal and crystalline mean the same and are interchangeable.

• true
• false

Glass is classified as a(n) ____________ solid.

• Durable
• crystalline
• amorphous

Modifiers are added to glass formers to  ______________________.

• increase melting temperature

• lower melting temperature
• stabilize melting temperature

Modifiers are usually found in groups _____ on the periodic table.

• 2-3
• 3-4
• 1-2
• 1-4

Which of the following is most likely a modifier?

• water
• silicon dioxide
• sodium oxide
• carbon dioxide

The most common material used as a glass former is _________.

• sodium
• silica
• sulfur

Over 90% of all glass that is formed is classified as ___________

• borosilicate
• lead alkali
• soda lime
• crystalline glass

To make purple glass, _____________ should be included in the original mixture.

• gold
• magnesium
• sodium
• manganese dioxide

___________ are used for coloring glass because their free electrons absorb some colors and reflect others.

• Transition metals
• Alkali metals
• Halogens
• Metalloids