AP Chemistry Flashcards: Solids, Liquids, and Gases
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026
Review key ideas with interactive flashcards. This set includes 11 cards to help you master important concepts.
What three variables determine the average spacing and collision frequency of gas particles?
The average spacing and collision frequency of gas particles are dependent on the gas's temperature (T), pressure (P), and volume (V).
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What three variables determine the average spacing and collision frequency of gas particles?
The average spacing and collision frequency of gas particles are dependent on the gas's temperature (T), pressure (P), and volume (V).
Describe the arrangement and movement of particles in the liquid phase.
Liquid particles are in close contact with each other but are in continuous motion, constantly moving and colliding.
What is a crystalline solid?
A crystalline solid is a type of solid where particles are arranged in a regular, repeating three-dimensional structure.
What two factors influence the structure of both crystalline and amorphous solids?
The structure of solids is influenced by the intermolecular forces (IMFs) between particles and the way the particles are packed together.
Describe the general characteristics of gas particles regarding motion and spacing.
Gas particles are in constant, random motion, and the average spacing between them is very large compared to the size of the particles themselves.
What two factors primarily influence the arrangement and movement of particles in a liquid?
The arrangement and movement of liquid particles are influenced by the strength of their intermolecular forces (IMFs) and the temperature of the system.
Why do solids and liquids typically have similar molar volumes?
Solids and liquids have similar molar volumes because their constituent particles are in close contact in both phases, meaning they occupy a comparable amount of space.
Why do gases have no definite volume or shape?
Gases lack a definite volume or shape because their particles are in constant, random motion and are not held in close contact, allowing them to expand to fill their container.
Describe the motion of particles within a solid.
In a solid, the motion of particles is limited to vibrations around their fixed positions within the structure.
What is an amorphous solid?
An amorphous solid is a type of solid in which the constituent particles have no regular, long-range arrangement.
Using a particulate-level model, describe the key difference in particle arrangement between a solid, a liquid, and a gas.
In a solid, particles are in a fixed, ordered structure. In a liquid, particles are in close contact but can move past one another. In a gas, particles are far apart and move randomly.