Test Yourself

Best answer to explain the image?

• Glass structure

• Crystalline structure

• Quartz crystalline structure

• blue and red

What is the best statement differentiating crystal and amorphous solids?

• Amorphous does not have long-range structural order like crystal

• Amorphous generally cheap compared to crystal

• Amorphous can be destroyed but not crystal

• Crystal will absorb like better than amorphous

This particle cannot be a basis in crystal structure:

• Ions

• Atoms

• Molecules

• Electrons

What term is used to describe this model of metallic bonding?

• Electron sea model

• Periodic Bonding

• Valence Bond Theory

• Molecular Orbital Theory

What is the example material of amorphous solid?

• Crystalline

• Poly-crystalline

• Glass

In amorphous solids, the atoms or molecules are held together in a completely random formation.

• True

• Flase

This type of solid forms a regular repeating

three-dimensional structure called a crystal lattice. What type of solid is this?

• amorphous

• glass

• crystalline

• diamond

Give number of atom/s in simple cubic (SC).

• 0

• 1

• 2

• 4

Give number of atom/s in BCC.

• 0

• 1

• 2

• 4

Give number of atom/s in FCC.

• 2

• 4

• 6

• 8