Front

What is the direction of heat transfer?

Back

Heat always travels from warm to cool.

Front

What happens to the motion of particles in a liquid when its temperature is increased?

Back

The motion of the particles speeds up.

Front

How does the motion of particles in a solid change as the temperature decreases?

Back

Particles move slower and vibrate less.

Front

What effect does lowering the temperature have on the speed of particles in a liquid?

Back

The speed decreases.

Front

What is the relationship between high temperature and kinetic energy?

Back

High temperature is connected to high kinetic energy.

Front

Define kinetic energy in the context of particle motion.

Back

Kinetic energy is the energy of motion; in particles, it increases with temperature.

Front

What happens to the kinetic energy of particles as temperature increases?

Back

The kinetic energy of particles increases.

Front

Explain how temperature affects the state of matter.

Back

As temperature increases, solids can become liquids (melting), and liquids can become gases (evaporation).

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat to each other.

Front

Describe the motion of gas particles compared to solid and liquid particles.

Back

Gas particles move freely and rapidly, while solid particles vibrate in place and liquid particles slide past each other.