Particle Movement and Thermal Energy

Front

James is observing a block of ice. Which of the following best describes the movement of particles in the ice when thermal energy is added? Options: Particles move faster and spread apart, Particles vibrate more vigorously but remain in place, Particles move freely and fill the container, Particles move in a fixed pattern.

Back

Particles vibrate more vigorously but remain in place.

Answer explanation

When thermal energy is added to ice, the particles vibrate more vigorously due to increased energy but remain in their fixed positions within the solid structure, making this the correct description of their movement.

Front

How does the addition of thermal energy affect the movement of particles in liquid soup?

Back

Particles move faster and can overcome some of the forces holding them together.

Answer explanation

The addition of thermal energy causes the particles in the soup to move faster, allowing them to overcome some of the intermolecular forces. This increased movement leads to a more fluid state, essential for heating the soup.

Front

What happens to gas particles when cooled significantly?

Back

Particles will slow down and come closer together.

Answer explanation

When gas is cooled, the kinetic energy of the particles decreases, causing them to slow down and come closer together. This is why the correct answer is that particles will slow down and come closer together.

Front

What happens to particles in a solid when it is heated to become a liquid?

Back

Particles in a solid vibrate more vigorously and eventually move freely as a liquid.

Answer explanation

When a solid is heated, its particles vibrate more vigorously due to increased energy. Eventually, they gain enough energy to overcome their fixed positions and move freely, transitioning into a liquid state.

Front

When thermal energy is removed from steam, what is the most likely change in the state of matter?

Back

The gas becomes a liquid as particles slow down and come closer together.

Answer explanation

When thermal energy is removed from steam (gas), the particles lose energy, slow down, and come closer together, resulting in condensation into a liquid. Thus, the gas becomes a liquid.