Solids

Question 1

Solids with particles that are in highly ordered arrangement.

Answer 1

Crystalline Solids

Question 2

Solids which there are no particular order in the arrangement of particles.

Answer 2

Amorphous Solids

Question 3

_____ solids have definite geometric shape.

Answer 3

Crystalline

Question 4

_____ solids have definite melting point.

Answer 4

Crystalline

Question 5

_____ solids have definite heat of fusion.

Answer 5

Crystalline

Question 6

_____ solids have cleavage property.

Answer 6

Crystalline

Question 7

_____ solids are anisotropic in nature.

Answer 7

Crystalline

Question 8

_____ solids are true solids.

Answer 8

Crystalline

Question 9

_____ solids have long range order in arrangement of particles.

Answer 9

Crystalline

Question 10

_____ solids have irregular shape.

Answer 10

Amorphous

Question 11

_____ solids gradually soften over a range of temperature.

Answer 11

Amorphous

Question 12

_____ solids do not have definite heat of fusion.

Answer 12

Amorphous

Question 13

_____ solids do not have cleavage property.

Answer 13

Amorphous

Question 14

_____ solids are isotropic in nature.

Answer 14

Amorphous

Question 15

_____ solids are pseudo solids or super cooled liquid.

Answer 15

Amorphous

Question 16

_____ solids have short range order in arrangement of particles.

Answer 16

Amorphous

Question 17

Repeating pattern of arrangement are called
the _____.

Answer 17

Unit Cell

Question 18

They are the basic structural unit of crystal.

Answer 18

Unit Cell

Question 19

_____ are when particles in unit cell are present only at the corners.

Answer 19

Primitive Unit Cell

Question 20

_____ are when particles are present at the corners as well as other parts of the unit cell.

Answer 20

Centered Unit Cell

Question 21

3 types of centered unit cell are _____ , _____ , and _____.

Answer 21

Body-Centered Cell, Face-Centered Cell, End-Centered Cell

Question 22

Same compound occurring in more than
one crystal structure is called _____.

Answer 22

Polymorphism

Question 23

Polymorphism depends on both the _____ and the _____.

Answer 23

Temperature, External Pressure

Question 24

Polymorphism in elemental solids are _____.

Answer 24

Allotropy

Question 25

_____ lattices allow the maximum amount of interaction between atoms.

Answer 25

Close-Packed

Question 26

In ionic crystals, ions pack themselves so as to maximize the _____ and minimize _____ between the ions.

Answer 26

Attractions, Repulsions

Question 27

Primitive cells have __ atom/s per cell, and are shared between __ cells.

Answer 27

1, 8

Question 28

Body-centered cells have __ atom/s per cell, and are shared between __ cells.

Answer 28

2, 1

Question 29

Face-centered cells have __ atom/s per cell, and are shared between __ cells.

Answer 29

4, 2

Question 30

End-centered cells have __ atom/s per cell, and are shared between __ cells.

Answer 30

2, 2

Question 31

Coordination number of primitive cells.

Answer 31

6

Question 32

Coordination number of body-centered cells.

Answer 32

8

Question 33

Coordination number of face-centered cells.

Answer 33

12

Question 34

Formula for theoretical density.

Answer 34

P = (no. of Atoms per unit cell * Atomic Weigh) / (Volume of unit cell * 6.022 x 10^23)

Question 35

Volume occupied by primitive cells.

Answer 35

52%

Question 36

Volume occupied by body-centered cells.

Answer 36

68%

Question 37

Volume occupied by face-centered cells.

Answer 37

74%

Question 38

Formula for the volume of simple cubic cell.

Answer 38

a^3; a = 2r

Question 39

Formula for the volume of face-centered cubic cell.

Answer 39

a^3; a = 2r√2

Question 40

Formula for the volume of body-centered cubic cell.

Answer 40

a^3; a = 4r/√3

Question 41

Diamond, quartz, and salt are examples of _____ solids.

Answer 41

Crystalline

Question 42

Glass, rubber, and plastic are examples of _____ solids.

Answer 42

Amorphous