11 Physics Heating Processes Revision

The kinetic particle model states that particles have most kinetic energy in which state:

• Solid

• Liquid

• Gas

• Queensland

Which of the sentences below provides the correct definition of temperature?

• Temperature is a measure of the average kinetic energy of the particles in a system.

• Temperature is the total kinetic and potential energy of the moving atoms and stretched bonds inside an object.

• Temperature is the total microscopic kinetic energy and microscopic potential energy of the particles in a system.

• Temperature is the energy associated with motion.

Which of the sentences below provides the correct definition of conduction?

• Conduction is the transfer of coldness.

• Conduction is heat transfer through stationary matter by physical contact.

• Conduction is the transfer of heat caused by the movement of particles within a fluid.

• Conduction is the transfer of energy in the form of electromagnetic waves or moving subatomic particles.

What is 38^oC expressed in Kelvin?

• -235 K

• 301 K

• 311 K

• -225 K

Temperature is related the total energy of a system. If energy is added to a system the temperature of that system will ...

• Increase

• Decrease

• Remain constant

• Get colder

What is the correct definition of specific heat capacity?

• How much energy 1 kg of an object can absorb.

• The thermal energy required to raise the temperature of 1 kg of a substance by 1 K.

• The thermal energy within a specific system.

• The amount of kinetic energy that is converted to thermal energy within a specific system.

Calculate the thermal energy, Q, absorbed when 1.5 kg of paraffin is raised from 288 K to 323 K. The specific heat capacity of paraffin is 2200 J kg^-1 K^-1.

• 150 000 J

• 200 000 J

• 185 000 J

• 165 000 J

The specific latent heat of fusion refers to the ...

• Heat required to initiate nuclear fusion.

• Heat that is left behind after a substance turns to gas.

• Heat that is necessary to fuse two substances together.

• Amount of energy required to melt 1 kg of a substance at its melting point.

How much energy is required to change a 2.00 kg block of lead to liquid at its melting point? The specific latent heat of fusion of lead is 2.30 × 10⁴ J kg^-1.

• 3.60 × 10⁴ J

• 4.60 × 10⁴ J

• 4.30 × 10⁴ J

• 3.80 × 10⁴ J

Which of the answers describes the zeroth law of thermal dynamics?

• If two bodies are touching, they are in thermal equilibrium.

• If two bodies are in thermal equilibrium with a third body, they are in thermal equilibrium with each other.

• If three bodies share a common temperature, they are the same element.

• If two bodies of different temperatures make contact, the temperature of both will decrease.