Internal Energy and Specific Heat Capacity Quiz

What is internal energy?

• The energy required to raise the temperature of a substance by one degree celsius

• The total energy stored by the particles making up a substance or system

• The energy released as a substance cools

• The movement energy of the particles

Answer explanation

Internal energy is the total energy stored by the particles making up a substance or system.

Tags

NGSS.HS-PS3-4

What is specific heat capacity?

• The total energy stored by the particles making up a substance or system

• The movement energy of the particles

• The amount of energy needed to raise the temperature of one kilo of a substance by one degree celsius

• The energy released as a substance cools

Answer explanation

Specific heat capacity is the amount of energy needed to raise the temperature of one kilo of a substance by one degree Celsius.

Tags

NGSS.HS-PS3-4

What is the equation for change in internal energy?

• ΔU = mc

• ΔU = mθ

• ΔU = mc^2

• ΔU = mcΔθ

Answer explanation

The equation for change in internal energy is ΔU = mcΔθ. This equation relates the change in internal energy (ΔU) to the mass (m) and the change in temperature (Δθ) of the system. It does not involve the specific heat capacity (c) or the square of the speed of light (c^2). Therefore, the correct choice is ΔU = mcΔθ.

What is the specific heat capacity of water?

• 5600 joules per kilo per degree celsius

• 139 joules per kilo per degree celsius

• 4200 joules per kilo per degree celsius

• 8000 joules per kilo per degree celsius

Answer explanation

The specific heat capacity of water is 4200 joules per kilo per degree celsius, which is the correct choice.

What is the main reason for using a lid and insulation when conducting the experiment with water?

• To decrease the temperature of the water

• To increase the temperature of the water

• To increase the specific heat capacity of water

• To prevent energy loss to the surroundings

Answer explanation

The main reason for using a lid and insulation is to prevent energy loss to the surroundings.

Tags

NGSS.MS-PS3-3

What is the measure of the average internal energy of a substance?

• Potential energy

• Specific heat capacity

• Kinetic energy

• Temperature

Answer explanation

The measure of the average internal energy of a substance is determined by its temperature.

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2

What is the movement energy of the particles making up a substance or system?

• Potential energy

• Kinetic energy

• Temperature

• Specific heat capacity

Answer explanation

The movement energy of particles in a substance or system is called kinetic energy. It is the energy associated with the motion of the particles.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS2-1