Intermolecular Forces and Properties
Which scenario best represents an increase in both enthalpy and entropy during a chemical process?
A piece of metal cooling down from 100°C to room temperature while remaining solid throughout the process.
Freezing water into ice under standard atmospheric pressure on cooling below 0°C.
Condensation of steam into liquid water under standard atmospheric pressure.
Melting of ice into water under standard atmospheric pressure.
Which intermolecular force is primarily responsible for the high melting point of ionic solids compared to molecular solids?
Hydrogen bonding between polar molecules
Electrostatic attractions between ions
Dipole-dipole interactions between polar molecules
Dispersion forces between molecules
In which type of solid are atoms held together by dispersion forces?
Metallic solids
Ionic solids
Molecular solids
Covalent network solids
Which type of solid has high melting points due to strong electrostatic attraction between ions?
Ionic solids
Metallic solids
Molecular solids
Covalent network solids
Which type of intrinsic solid has its atoms connected in a large network or chain by covalent bonds?
Ionic solids
Molecular solids
Covalent network solids
Metallic solids
Which type of solid is characterized by a high melting point and the ability to conduct electricity in a molten state?
Molecular solid
Metallic solid
Ionic solid
Covalent network solid
In a face-centered cubic (FCC) crystal lattice structure, what is the coordination number for each atom?
Eight
Twelve
Six
Four

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What causes covalent network solids to be extremely hard and have high melting points?
Van der Waals forces
Continuous network of covalent bonds
Hydrogen bonding
Metallic bonding
Which of the following properties is most directly influenced by the strength of a solid's intermolecular forces?
Melting point
Color
Electrical conductivity
Odor
How does the property 'melting point' relate to cookware made from different materials?
They require low melting points to cool quickly after cooking.
Metals with high melting points are chosen to avoid deformation under heat.
Meltable metals provide better flavor release during cooking.
Metals with variable melting points indicate quality levels.