Particles in Motion

The process where particles spread out from a crowded area.

The process where particles clump together in a small space.

The process where particles stop moving completely.

The process where particles become larger in size.

The random movement and collision of particles.

The force of gravity pulling particles down.

The particles getting colder and slowing down.

The container getting smaller and squeezing the particles.

The particles will spread out until they are evenly mixed throughout the container.

The particles will remain in a single, concentrated drop.

The particles will all move to one side of the container.

The particles will stop moving as soon as they are added.

Widely spaced and moving rapidly

Closely spaced and vibrating in fixed positions

In contact with each other and sliding past one another

Tightly packed together and not moving at all

Particles in a solid are widely spaced, while particles in a liquid are close together.

Particles in a solid move rapidly, while particles in a liquid move slowly.

Particles in a solid vibrate in place, while particles in a liquid can slide past one another.

Particles in a solid can slide past one another, while particles in a liquid vibrate in place.

The molecules would lock into fixed positions and only vibrate.

The molecules would get closer together and slow down.

The molecules would spread far apart and move much more rapidly.

The molecules would stop moving completely and stay in one place.

The energy stored in particles

The energy of motion in particles

The energy from a particle's size

The energy that holds particles together

The particle's kinetic energy decreases.

The particle's kinetic energy increases.

The particle's kinetic energy stays the same.

The particle loses all of its energy.

The particles in Diagram A have more kinetic energy.

The particles in Diagram B have more kinetic energy.

The particles in both diagrams have equal kinetic energy.

The diagrams do not show any information about kinetic energy.

The average kinetic energy of particles in a substance.

The total mass of a substance.

The total energy of all particles in a substance.

The state of matter of a substance.

Temperature and average kinetic energy.

Mass and volume.

Temperature, mass, and state.

Average kinetic energy and state.

The cup of hot tea, because it has a higher temperature.

The swimming pool, because it has a much larger mass.

They both have the same amount of thermal energy.

It is impossible to tell without knowing the exact temperatures.

The transfer of energy from a warmer object to a cooler one.

The total energy of moving atoms and molecules in an object.

The energy an object has because of its position.

The energy created when an object gets colder.

Thermal energy is the total energy of moving particles, while heat is the transfer of that energy.

Heat is the total energy of moving particles, while thermal energy is the transfer of that energy.

There is no difference; heat and thermal energy are the same thing.

Thermal energy is only found in hot objects, while heat can be in any object.

Energy will be transferred from the hot chocolate to the cold spoon.

Energy will be transferred from the cold spoon to the hot chocolate.

The spoon will get colder because the hot chocolate absorbs its energy.

No energy will be transferred between the spoon and the hot chocolate.

The addition or removal of thermal energy

A change in the substance's mass

The substance's initial temperature

The pressure of the environment

Melting and evaporation

Condensation and freezing

Melting and condensation

Evaporation and freezing

Water vapor in the air forming ice crystals on a cold window.

An ice cube turning into a puddle of water on the counter.

A puddle on the sidewalk disappearing on a sunny day.

A solid candy bar turning into a liquid in a hot car.

Its total volume increases.

Its total volume decreases.

Its particles get heavier.

Its particles stop moving.

The particles gain kinetic energy and move farther apart.

The particles lose kinetic energy and come closer together.

The particles become larger in size.

The particles become chemically bonded.

The liquid's volume will decrease because its particles will slow down and move closer together.

The liquid's volume will increase because the cold will push the particles apart.

The liquid's volume will stay the same because no liquid was added or removed.

The liquid will turn into a solid instantly, keeping the same volume.

The force created by gas particles hitting the walls of a container.

The energy that gas particles lose when they get cold.

The attraction that pulls gas particles toward each other.

The space that a gas takes up inside a container.

They lose kinetic energy and move slower.

They gain kinetic energy and move faster.

They stick to the walls of the container.

They become larger in size.

The pressure will increase because the particles will hit the walls more frequently and forcefully.

The pressure will decrease because the particles will try to escape the heat.

The pressure will stay the same because the amount of gas has not changed.

The pressure will drop to zero as the particles stop moving.