Podcast
Questions and Answers
Which change of state is shown in the model?
Which change of state is shown in the model?
- Deposition
- Evaporation
- Sublimation (correct)
- Condensation
Which change of state is shown in the model?
Which change of state is shown in the model?
- Melting
- Freezing
- Sublimation
- Deposition (correct)
What happens during evaporation?
What happens during evaporation?
A liquid changes to a gas.
During which changes of state does the motion of the atoms decrease?
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?
During which changes of state do atoms overcome the attractive forces between them?
On a cool morning, Uyen's breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen seeing her breath in this way?
On a cool morning, Uyen's breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen seeing her breath in this way?
Rahul sees a flock of birds flying and landing. Which change of state does the motion of the birds most closely model?
Rahul sees a flock of birds flying and landing. Which change of state does the motion of the birds most closely model?
Frieda makes a pyramid of oranges for a display. Which change of state does the motion of the oranges most closely model?
Frieda makes a pyramid of oranges for a display. 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?
During which change of state would the volume of a substance increase the most?
The process by which a solid changes to a liquid is?
The process by which a solid changes to a liquid is?
The process by which a gas changes to a solid is?
The process by which a gas changes to a solid is?
As atoms gain energy, they move faster and slide past one another. Which change of state is taking place?
As atoms gain energy, they move faster and slide past one another. Which change of state is taking place?
Which arrow represents the change of state described where atoms gain energy?
Which arrow represents the change of state described where atoms gain energy?
Which arrow represents the change of state described where atoms lose energy?
Which arrow represents the change of state described where atoms lose energy?
Which change of state has the wrong energy change listed?
Which change of state has the wrong energy change listed?
Which statement best describes the energy changes associated with evaporation and boiling?
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 gas changes to solid?
How is energy related to the change of state represented by the model when solid changes to liquid?
How is energy related to the change of state represented by the model when solid changes to liquid?
If atoms ______ energy during a change of state, they are pulled together by attractive forces and become more organized.
If atoms ______ energy during a change of state, they are pulled together by attractive forces and become more organized.
In which changes of state do atoms lose energy? Check all that apply.
In which changes of state do atoms lose energy? Check all that apply.
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Study Notes
Changes of State Overview
- Sublimation: The transition from solid to gas without passing through the liquid state.
- Deposition: The process where gas transforms directly into a solid.
Evaporation and Related Processes
- Evaporation: A liquid changes into a gas.
- Vaporization: Atoms overcome attractive forces and transition from liquid to gas.
Atom Motion and Energy Changes
- During freezing and condensation, the motion of atoms decreases.
- In contrast, during vaporization and sublimation, atoms gain enough energy to overcome attraction.
Observational Examples
- Uyen's breath forms a cloud due to vaporization and condensation with temperature changes.
- When birds land, their motion can be likened to deposition.
- The motion of spilled oranges resembles melting, implying a change from a structured arrangement to a disorganized state.
Volume Changes
- Sublimation results in the greatest increase in volume among the changes of state.
Specific Processes
- Melting: The transformation from solid to liquid.
- Deposition: The transformation from gas directly into a solid.
Energy Dynamics
- Atoms gain energy and move faster when a liquid transitions to a gas.
- Energy changes occur notably when transitioning between solid, liquid, and gas states:
- Atoms lose energy when gas changes to solid.
- Atoms gain energy when solid changes to liquid.
Energy Organization
- Atoms lose energy during certain changes, leading to more organized structural arrangements.
Identifying Changes of State
- Freezing, deposition, and condensation are key processes in which atoms lose energy.
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