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What makes a glass different from a soli...

What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?

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Glass is a super cooled liquid and an amorphous substance. Quartz is the crystalline form of silica `(SiO_(2))` in which tetrahedral units `SiO_(4)` are linked with each other in such a way that the oxygen atom of one tetrahedron is shared with another Si atom. Quartz can be converted inot glass by melting it and cooling the melt very rapidly. In glass, `SiO_(4)` tetrahedra are joined in a random manner.
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DINESH PUBLICATION-SOLID STATE-N.C.E.R.T
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  2. Define the term "amorphous". Give a few example of amorphous solids.

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  3. What makes a glass different from a solid such as quartz? Under what c...

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  4. Classify each of the following solids as ionic, metallic, molecular, n...

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  5. What is meant by the term "coordination number"? b. What is the coor...

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  6. How can you determine the atoic mass of an unknown metal if you know i...

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  7. a. "Stability of a crystal is reflected is reflected in the magnitude ...

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  8. How will you distinguish between the following pairs of terms? a. He...

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  9. How many lattice points are there in one unit cell of each of the foll...

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  10. Explain a. The basic of sumilarities and differences between metalli...

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  11. Calculate the efficiency of packing in case of a metal crystal for a...

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  12. Silver crystallises in a face centred cubic lattice with all the atoms...

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  13. A cubic solid is made of two element P and Q Atoms of Q are the corner...

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  14. Niobium crystallizes in body-centred cubic structure. If the density i...

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  15. If the radius of the octaheral void is r and the radius of the atoms i...

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  16. Copper crystallizer into an fcc lattice with edge length 3.61 xx 10^(8...

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  17. Analysis shows that nickel oxide has the formula Ni(0.98)O(1.00). What...

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  18. What is a semiconductor? Describe the two main types of semiconductor ...

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  19. Non-stoichiometric cuprous oxide. Cu(2)O can be perpared in laboratory...

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  20. Ferric oxide crystalliizes in a hexagonal close-packed array of oxide ...

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