The Particle Model

Question 1

A metal spoon is placed in hot water, warming the spoon (thermal energy is added). What happens to the particles?

Accepted Answer

The spoon's particles vibrate faster around their fixed positions.

Answer

The spoon's particles slow down and stop.

Answer

The spoon's particles instantly melt into a liquid.

Answer

The spoon's particles leave the spoon and float away.

Question 2

Which of the following statements correctly describes the particle arrangement and motion in a liquid?

Accepted Answer

The particles are close together but not in a fixed pattern; they can slide past each other.

Answer

The particles are far apart and move rapidly in all directions.

Answer

The particles are close together in a fixed pattern and cannot move past each other.

Answer

The particles are tightly packed in a regular pattern and only vibrate in place.

Question 3

Which description correctly represents the particle arrangement and motion in a liquid?

Accepted Answer

Particles are close together but not in a fixed pattern; they can slide past each other.

Answer

Particles are tightly packed in a regular pattern and vibrate in place.

Answer

Particles are far apart and move rapidly in all directions.

Answer

Particles are close together in a fixed pattern and cannot move at all.

Try three questions