Ch.1 - Intro to General ChemistryWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: The first diagram depicts a compound in its liquid state.Which of the other diagrams best depicts the compound after it has evaporated into a gas?

Solution: The first diagram depicts a compound in its liquid state.Which of the other diagrams best depicts the compound after it has evaporated into a gas?

Problem

The first diagram depicts a compound in its liquid state.
A collection of molecules consisting of two gray spheres combined with a lighter-colored sphere. The molecules are relatively close together with no ordered arrangement.

Which of the other diagrams best depicts the compound after it has evaporated into a gas?
Four diagrams, a, b, c, and d. Diagram a is a collection of molecules consisting of two gray spheres combined with a lighter-colored sphere. The molecules are relatively far apart with no ordered arrangement. Diagram b is a collection of isolated gray and lighter-colored spheres randomly distributed throughout the sample. Diagram c is a collection of molecules, some of which are composed of two gray spheres and others composed of two lighter-colored spheres. Diagram d is a collection of gray spheres, and gray and lighter-colored spheres combined as a molecules randomly distributed throughout the sample.

Solution

Evaporation of a liquid into a gas is a physical change. This means there's no change in the composition of the compound in the gaseous state, and the molecules will look the same in both the liquid and gaseous state.

Recall that gases have more empty space between their molecules than liquids.

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