Chemistry: Heat Transfer P5

Front

The measure of average kinetic energy of all the particles within an object is called ____________.

Back

Temperature

Front

Which statement is true? The quicker a molecule moves, the colder it is., The slower a molecule moves, the warmer it is., The quicker a molecule moves, the warmer it is, The movement of molecules doesn’t affect its temperature.

Back

The quicker a molecule moves, the warmer it is.

Front

The total energy (kinetic & potential) of all the particles in a substance is called:

Back

Thermal energy

Front

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

Back

Hotter to colder

Front

You're holding hands with your best friend. Your friend's hands are REALLY warm and yours are really cold. After a few minutes, this has changed. How might you explain what happened?

Back

The heat energy from your friend's hand transferred to your hand through conduction.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases).

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves.

Front

What is the relationship between temperature and kinetic energy?

Back

As the temperature of a substance increases, the average kinetic energy of its particles also increases.

Front

What happens to the thermal energy of a substance when it is heated?

Back

The thermal energy of a substance increases when it is heated.