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1. Describe four types of intermolecular interactions; sketch attractions between molecules (somehow communicate what the attraction is). Which of these is the strongest? Which is the weakest? What can a substance’s phase at room temperature tell us about the intermolecular interactions?

2. What types of substances can hydrogen bond? What is special about the hydrogen bond?

3. Define each of the following: vaporization; condensation; sublimation; deposition; melting (fusion); freezing. Which of these are exothermic? Which are endothermic?

4. Define the “heat of fusion” (ΔHfus) and “heat of vaporization” (ΔHvap). Why do these processes require an input of energy? What is the energy used for?

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Elin Hessel
Elin HesselLv2
29 Sep 2019

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Related questions

1. Describe four types of intermolecular interactions; sketch attractions between molecules (somehow communicate what the attraction is). Which of these is the strongest? Which is the weakest? What can a substance’s phase at room temperature tell us about the intermolecular interactions?

2. What types of substances can hydrogen bond? What is special about the hydrogen bond?

3. Define each of the following: vaporization; condensation; sublimation; deposition; melting (fusion); freezing. Which of these are exothermic? Which are endothermic?

4. Define the “heat of fusion” (ΔHfus) and “heat of vaporization” (ΔHvap). Why do these processes require an input of energy? What is the energy used for?


I'm going over a study guide for a test. The correct answers are listed. However I have highlighted the ones I do not understand. Please explain in detail! Much appreciated.

WORD BANK:

Atomic solids

Body-centered cubic

Boiling point

Condensation

Covalent atomic solids

Crystal lattice

Crystalline solids

Distillate

Distillation

Dynamic equilibrium

Evaporation

Face-centered cubic

Freezing

Freezing point

Ionic solids

Intramolecular

Interionic forces

Intermolecular forces

Liquid State

Macromolecule

Melting

Melting point

Metallic atomic solids

Molar heat of fusion

Molar heat of vaporization

Molecular solids

Non-bonding atomic solids

Non-crystalline (amorphous) solids

Properties of Liquids

Properties of Solids

Simple cubic

Solid State

Sublimation

Surface tension

Surfactants

Vapor pressure

Vaporization

Viscosity

Wetting action

Use the Vocabulary words above to complete the following sentences words can be used more than once, some words are not be used.

d. The molecules of a ________ are in constant motion. e. The __________ of a liquid is related to the shape of the molecules that make up the liquid. f. The force of attraction that causes the surface of a liquid to contract and form a “bead” or spherical drop is called? _________ _______ g. Chemical that reduce surface tension are called? __________ h. A liquids ability to spread out evenly over a surface as a thin film is called it’s? _________ _______ i. ____________ is the process by which molecules of a liquid break away and go into the gas phase. j. When the molecules of a volatile liquid jump to gas phase it is called _________. k. The reverse of evaporation (the conversion of a vapor to a liquid) is called? _________ l. When the rate at which the water is evaporating is equal to the rate at which the water vapor is condensing, you have established a __________ _________. m. ________ _______ is the partial pressure of a gas in dynamic equilibrium with its liquid. n. ________ _______ is when the vapor pressure equals the atmospheric pressure. o. Boiling point can be used to purify a solution of two or more substances by ________. p. The condensed vapor sample is called the? ________ q. The exact quantity of heat required to vaporize 1 mole of a liquid at constant pressure and temperature is called the ________ ________ ___ __________. r. In ________________ __________ the particles do not have a definite or regular order (there is no repeating pattern throughout the solid). s. In ____________ __________, the particles are arranged in regular, systematic patterns called a ________ _________. t. The three different types of crystal lattices based on the cube are? ________ ______, _____________ ______, and ___________, ________. u. The three types of atomic solids include _________ _____, ___________ ______, and __________ ________.

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