Solids and Plasmas

Question 1

Which reason best explains why plasmas are good conductors of electricity?

Revolt · Accepted Answer

They have mobile charged particles.

Question 2

Which is an example of a plasma that occurs in nature?

Revolt · Accepted Answer

the radiant sun

Question 3

Which best explains why a crystal is incompressible?

Revolt · Accepted Answer

There is little, if any, space left between its adjacent molecules.

Question 4

Which description best characterizes the motion of particles in a solid?

Revolt · Accepted Answer

vibrating around fixed positions

Question 5

The repeating subunits that are responsible for the shape of a crystal are known as

Revolt · Accepted Answer

unit cells.

Question 6

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?

Revolt · Accepted Answer

Matter changes to a plasma state.

Question 7

Temperature depends on the average kinetic energy of the particles in a sample. How does this help explain why a plasma-based light does not have a high temperature?

Revolt · Accepted Answer

Most particles in the plasma are heavy, slow, and very low density.

Question 8

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?

Revolt · Accepted Answer

an amorphous solid because the particles do not have a regular structure

Question 9

Which state of matter is characterized by ionized particles, no definite shape or volume, and good electrical conductivity?

Revolt · Accepted Answer

plasma

Question 10

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

Revolt · Accepted Answer

nonthermal plasma.

Solids and Plasmas Answers

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