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Questions and Answers
What occurs when gas particles reach a cold surface?
What occurs when gas particles reach a cold surface?
- They lose energy and come closer together. (correct)
- They become solid instantly.
- They gain energy and move faster.
- They escape from the surface as gas.
What is the result of removing heat energy from a liquid?
What is the result of removing heat energy from a liquid?
- The particles can slide past one another more easily.
- The particles eventually form a solid. (correct)
- The particles escape as gas.
- The particles vibrate more vigorously.
Which statement best describes the motion of particles in a gas?
Which statement best describes the motion of particles in a gas?
- They form fixed patterns similar to solids.
- They are closely held together by strong forces.
- They are free to move and can spread out. (correct)
- They are tightly packed and vibrate in place.
What happens to liquid particles as they gain heat energy?
What happens to liquid particles as they gain heat energy?
When does a liquid become a solid?
When does a liquid become a solid?
Flashcards
Evaporation
Evaporation
The process of a liquid turning into a gas when heated.
Boiling
Boiling
When particles in a liquid gain enough energy to overcome the forces holding them together, they escape into the air as gas.
Condensation
Condensation
The process of a gas turning into a liquid when cooled.
Freezing
Freezing
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Solid
Solid
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Study Notes
States of Matter: Liquid, Gas, and Solid
- Liquids have particles that touch each other, held together weakly.
- Heat gives particles more energy, enabling some to escape into the gaseous state (evaporation/boiling).
- Gas particles are free to move in any direction, no forces holding them together.
- Gases become liquids through condensation, when particles lose energy and are attracted to each other.
- Liquid particles can move and flow, but as heat energy is removed, they move slower.
- When a liquid's particles lose enough energy, they vibrate in a fixed pattern, becoming a solid.
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