Particles in Motion

Front

What happens to gas particles when they lose kinetic energy?

Back

They lose speed and get closer together.

Front

Define contraction in terms of particle motion.

Back

Contraction is the reduction of volume as a result of heat being removed.

Front

What is the kinetic energy level of solids?

Back

Solids have low kinetic energy.

Front

What is compression in the context of matter?

Back

Compression is the reduction of volume of matter as a result of applied pressure.

Front

What does kinetic energy represent?

Back

Kinetic energy is the energy of motion.

Front

How does temperature affect the motion of particles in a gas?

Back

As temperature increases, gas particles move faster and spread apart.

Front

What is the relationship between kinetic energy and temperature?

Back

Kinetic energy is directly proportional to temperature; higher temperature means higher kinetic energy.

Front

What occurs to particles in a substance when heat is added?

Back

Particles gain kinetic energy, move faster, and may change state.

Front

What is the effect of pressure on gas particles?

Back

Increasing pressure on gas particles forces them closer together, reducing volume.

Front

Explain the concept of thermal expansion.

Back

Thermal expansion is the increase in volume of a substance as its temperature increases.