Internal Energy, Heat and Work

The average kinetic energy of the particles in a substance

• internal energy

• temperature

• heat

• thermodynamics

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

The direction of heat flow

• cold to hot

• hot to cold

• up

• out

Tags

NGSS.HS-PS3-4

The transfer of internal energy

• temperature

• kinetic energy

• thermodynamics

• heat

Tags

NGSS.HS-PS3-4

In an isolated system, the amount of heat gained by one substance is exactly equal to the amount of heat lost by the second substance.

• work equals change in kinetic energy

• The law of conservation of energy

• internal energy

• Hubble's Law

Tags

NGSS.HS-PS3-4

On the Kelvin scale 0 degrees Celsius is,

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

When 100 grams of water at 20 degrees Celsius is mixed with 100 grams of water at 50 degrees Celsius, the final temperature is

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

In question 6, did the 20 degree sample of water change more in temperature than the 50 degree sample of water?

• yes

• no, the 20 degree sample changed less in temperature than the 50 degree sample

• No, the change in temperature for both samples was the same.

Tags

NGSS.HS-PS3-4

Describe the motion of the particles at the microscopic level from question 6.

• no change in motion of water molecules

• all water molecules sped up

• all water molecules slowed down

• water molecules at higher temperature slowed down

• water molecules at lower temperature sped up

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

For the hot water in question 6 which of the following happened?

• Kinetic energy increased

• Kinetic energy decreased

• Potential energy increased

• Potential energy decreased

• Internal energy decreased

Tags

NGSS.HS-PS3-4

Internal energy is the...

• sum of the kinetic and potential energies of an object

• sum of the random distribution of kinetic and potential energies of the molecules of the system

• sum of the random distribution of heat and potential energies of the molecules of the system

• sum of the kinetic and potential energies of the molecules of an object

Tags

NGSS.HS-PS3-4