AnswersCHS Chemistry ASolids and Plasmas

Solids and Plasmas Answers

0 verified answers
1
Free Preview

Which is an example of plasmas in nature?

A
solar cells
B
plasma balls
C
auroras
D
clouds
2
Free Preview

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

A
gas
B
liquid
C
plasma
D
solid
3

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

A
slow but able to move past one another
B
fast and widely spaced
C
not moving
D
vibrating around fixed positions
4

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?

A
No particles in the plasma have high kinetic energy.
B
The fastest particles have the greatest mass.
C
Most particles in the plasma are heavy, slow, and very low density.
D
The fastest particles transfer most of their energy through collisions.
5

Keisha makes a table to compare plasmas and solids. PlasmaSolidKinetic energyX Density YWhich labels belong in the cells marked X and Y?

A
X: HighY: High
B
X: HighY: Low
C
X: LowY: High
D
X: LowY: Low
6

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?

A
Substance X is a crystal, and substance Y is a liquid.
B
Substance X is a gas, and substance Y is a plasma.
C
Substance X is a plasma, and substance Y is a crystal.
D
Substance X is a solid, and substance Y is a plasma.
7

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?

A
Matter changes to a solid state.
B
Matter changes to a liquid state.
C
Matter changes to a plasma state.
D
Matter changes to a gaseous state.
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?

A
an amorphous solid because the particles do not have a regular structure
B
an amorphous solid because the motion of the particles stopped
C
a crystalline solid because the moving particles lock into fixed positions
D
a crystalline solid because the particles have a long-range order

Did you find these answers helpful?