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The greenish tint seen on the edges of tempered glass is caused by?

Manganese

Iron

Silicate

Copper

The green tint found in most tempered glass is a result of iron used in the production of glass sheets, where it is added as an ingredient to act as a lubricant. In fact, except in manufacturing processes designed to minimize iron use to avoid the green tint, you’ll find that green cast in all sheets of glass–not just tempered glass

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4

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This photo has been taken at a seaglass beach in Hawai'i. How is the sea glass formed?

from lava droplets that fall to the sea during land volcano explosions

in deepwater volcano explosions

during lightning strikes

Glass is amorphous solid. What does it mean?

has a crystal structure

has a liquid structure

has a noncrystalline structure

has a regular structure

A characteristic feature of hyalite glass is?

black or red color and lack of transparency

high fire resistance

black color and poor cold resistance

inability to store liquids, especially alcohols

The developmental stages between insect moltings are known as?