Glasses - blackboard quizzes

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15 Terms

1
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Question 1

All glasses are oxides

False

2
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Windows, bottles and glass tableware is most commonly made of which type of glass?

Soda-lime-silica

3
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To produce metallic glasses you have to cool the melt much more quickly than you do for conventional oxide glasses.

True

4
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On heating glasses melt at their glass transition temperature.

False

5
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Pure silica glass is used for

Fibre optics and some laboratory glasswear

6
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Obsidian (a natural glass) can be up to

100 million years old

7
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All glasses are transparent in the visible range True/False

False

8
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For oxide glasses the annealing point corresponds to which of the following viscosities?

10^12 Pa.s

9
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Commercial soda-lime-silica glasses contain

More silica than soda or lime

10
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13
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15
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