Thermal Energy and Heat Transfer

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What is sublimation?

Back

Sublimation is the process in which a solid changes directly into a gas without passing through the liquid state.

Front

What is an endothermic change?

Back

An endothermic change is a process that absorbs heat from the surroundings, resulting in a decrease in temperature.

Front

What is an exothermic change?

Back

An exothermic change is a process that releases heat to the surroundings, resulting in an increase in temperature.

Front

What happens during boiling?

Back

During boiling, a liquid absorbs heat and changes into a gas.

Front

What is freezing?

Back

Freezing is the process in which a liquid turns into a solid as it loses heat.

Front

What is the state of matter at point E if it is a gas?

Back

At point E, the state of matter is gas, which has high energy and particles that are far apart.

Front

Can heat change without a change in temperature?

Back

Yes, heat can change without a change in temperature, especially during phase changes.

Front

What is the difference between heat and temperature?

Back

Heat is the total energy of molecular motion in a substance, while temperature is a measure of the average kinetic energy of the particles.