Changes of State Flashcards

Which change of state is shown in the model?

What happens during evaporation?

During which changes of state does the motion of the atoms decrease?

During which changes of state do atoms overcome the attractive forces between them?

Which changes of state are most responsible for Uyen seeing her breath in this way?

Which change of state does the motion of the oranges most closely model?

During which change of state would the volume of a substance increase the most?

Which is the process by which a solid changes to a liquid?

Which change of state is taking place when atoms gain energy and move faster?

Which arrow represents the change of state when atoms lose energy?

Which change of state has the wrong energy change listed?

Which statement best describes the energy changes associated with evaporation and boiling?

How is energy related to the change of state represented by the model when gas changes to solid?

How is energy related to the change of state represented by the model when a solid changes to a liquid?

What happens if atoms lose energy during a change of state?

Changes of State Overview

Sublimation occurs when a solid directly transitions to a gas without becoming liquid.
Deposition is the reverse process of sublimation, where a gas changes directly to a solid.

Evaporation is the process where a liquid transforms into a gas.
Freezing and condensation are characterized by a decrease in atom motion; atoms lose energy and become more organized.
Vaporization and sublimation involve atoms overcoming their attractive forces, leading to increased motion and energy.

Atmospheric Effects

Condensation causes visible breath on cool mornings as water vapor from breath turns into tiny droplets, forming a cloud.

Physical Changes and Models

Melting is the change of state from solid to liquid, modeled by the motion of spilled oranges.
Sublimation results in a significant increase in the volume of a substance, indicating a drastic change in state.

Energy Changes in States

The process of melting signifies a change from solid to liquid, where atoms gain energy and move more freely.
During the phase transition from liquid to gas, atoms gain energy, allowing them to slide past one another and break free from the liquid surface.
In scenarios where gases transition to solids, atoms lose energy, becoming more organized and drawn closer together.

Misconceptions and Clarifications

The energy change during deposition is often misrepresented; this transition should be carefully studied.
Both evaporation and boiling involve atoms gaining energy, though they occur under different conditions.

General Principles of Changes of State

Atoms gain energy when transitioning from solid to liquid and gas, while they lose energy when moving from gas to liquid and solid.
Visual representations, such as diagrams depicting the states and their transitions, are essential for understanding these concepts.

Test your knowledge on the various changes of state with these informative flashcards. Each card presents a question related to processes such as sublimation, deposition, evaporation, and more. Ideal for students looking to reinforce their understanding of state changes in matter.