AP Physics 1: Algebra-Based Flashcards: Internal Structure and Density
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 is the primary physical property that distinguishes a fluid from a solid?
The primary distinguishing property is that a fluid has no fixed shape.
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What is the primary physical property that distinguishes a fluid from a solid?
The primary distinguishing property is that a fluid has no fixed shape.
What are the two defining characteristics of an ideal fluid?
An ideal fluid is defined by being incompressible and having no viscosity.
What is an ideal fluid?
An ideal fluid is a substance that is incompressible and has no viscosity.
If you know the mass and volume of a substance, what property related to its internal structure can you determine?
You can determine its density by calculating the ratio of its mass to its volume.
What physical property is commonly used to characterize fluids?
Fluids can be characterized by their density, which is the ratio of their mass to volume.
What is a fluid?
A fluid is a substance that has no fixed shape.
What is the fundamental reason for the different properties of solids, liquids, and gases?
The distinguishing properties of solids, liquids, and gases stem from the varying interactions between their atoms and molecules.
Term: A ratio of mass to volume
This ratio defines the property of density.
What is the origin of the distinguishing properties among the different states of matter?
These properties originate from the different types of interactions that occur between the atoms and molecules of a substance.
Term: Incompressible and no viscosity
These are the properties that describe an ideal fluid.
How is density defined?
Density is defined as a ratio of mass to volume.