Condensd States Of Matter: Question Preview (ID: 1600)

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The most important difference between solids and liquids is the
a) fixed pattern of particle arrangement in a solid
b) smaller distance between particles in a solid
c) ability of the particles in a solid to move freely
d) much greater density of solids

The smallest representative, repeating portion of a crystal is the
a) unit cell
b) lattice cell
c) molecular cell
d) molar cell

Solids that contain water molecules embedded in their lattice structures are called
a) hydrates
b) anhydrous
c) amorphous
d) hydrogenated

Amorphous solids, because of their disordered arrangement of particles and the associated properties, are often more appropriately labeled
a) supercooled liquids
b) hydrated solids
c) imperfect solids
d) semisolids

Types of crystalline solids include all of the following except
a) nonmetallic
b) metallic
c) molecular
d) covalent-network

What is the characteristic feature of a metallic crystal?
a) The valence electrons move around the positive ion
b) The metallic bond is directional
c) The bonding forces are weak
d) The positive ion is free to move

Which of the following types of crystalline solids would you expect to have the highest melting temperatures?
a) network-covalent
b) molecular
c) ionic
d) metallic

A change in the physical state of a substance always involves a change in
a) energy
b) volume
c) temperature
d) pressure

The molecules in a liquid at a particular temperature
a) have a range of kinetic energies
b) all have the same kinetic energy
c) each have different but fixed kinetic energies
d) have kinetic energies unrelated to the temperature

A condition in which the rates of two opposing changes that are occurring simultaneously are equal is referred to as a(n)
a) dynamic equilibrium
b) false equilibrium
c) unstable equilibrium
d) static equilibrium

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