Pre-test Chem.- Energy

The 1st law of Thermodynamics

• Energy can not be created or destroyed. It just changes forms.

• Energy can only be created by the sun

• Some energy is lost to the environment.

1200 J of heat are added to a sample of gas while 400 J of work is done by the gas. What is the change in internal energy of the gas?

• 800 J

• 1600 J

• -800 J

• -1600 J

A substance with a high specific heat:

• Is always extremely hot.
• Requires a lot of energy to become hot.
• Is not heavy.
• Does not requires a lot of energy to become hot.

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-1

Thermal energy always moves:

• From a high temperature object to a lower temperature object.
• From a lower temperature object to a higher temperature object.
• From an object with lower kinetic energy to an object with higher kinetic energy.
• From an object of higher mass to an object of lower mass.

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2

It is possible to reach absolute zero

• true
• false

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The transfer of thermal energy between objects of different temperatures is called...

• temperature
• heat
• internal energy
• none of these

Tags

NGSS.HS-PS3-4

The temperature of a glass of cold water will eventually...

• Match the temperature of the surrounding environment.
• Always be colder than the surrounding environment.
• Become warmer than the surrounding environment.
• Never change temperature.

Tags

NGSS.HS-PS3-4

What is absolute zero?

• 0 K

• 273 K

• 0^oC

• -273⁰C

The 1st Law of Thermodynamics says that temperature exists

• True 
• False

What do we call the relationship between thermal energy, heat and work?

• Closed System
• Entropy
• Conductors
• Thermodynamics

Tags

NGSS.HS-PS3-4