Solids And Plasma

25 July 2022
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question
Which state of matter is characterized by ionized particles, no definite shape or volume, and good electrical conductivity?
answer
plasma
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Which is an example of plasmas in nature?
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Auroras
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How does the motion of particles in the sun's plasma compare to the motion of particles in a solid?
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Particles in the plasma move randomly, but particles in a solid vibrate in one place.
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Temperature depends on the average kinetic energy of the particles in a sample. How does this help with explaining why a plasma-based light does not have a high temperature?
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most particles in the plasma are heavy and slow
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A plasma that has particles that never collide frequently enough to exchange kinetic energy and never reach a temperature equal to the surroundings is categorized as a
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nonthermal plasma.
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The repeating subunits that are responsible for the shape of a crystal are known as
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unit cells.
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A group of students are wandering around a room. When their teacher claps, the students sit down wherever they are. This situation best models the formation of which type of solid?
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an amorphous solid because the particles do not have a regular structure
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Substance X has a fixed volume, and the attraction between its particles is strong. Substance Y has widely spread out particles and can be compressed. What can most likely be concluded about these substances?
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Substance X is a solid, and substance Y is a plasma.
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Which best explains why a crystal is incompressible?
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There is little, if any, space left between its adjacent molecules.
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Which reason best explains why plasmas are good conductors of electricity?
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They have mobile charged particles.
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Which description best characterizes the motion of particles in a solid?
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vibrating around fixed positions
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Which low-energy state of condensed matter is characterized by structural rigidity and resistance to changes of shape or volume?
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solid
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What are thermal plasmas?
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plasmas that reach a temperature equal to their surroundings
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What happens when the kinetic energy of molecules increases so much that electrons are released by the atoms, creating a swirling gas of positive ions and negative electrons?
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Matter changes to a plasma state.
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Which is an example of a plasma that occurs in nature?
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the radiant sun