Question

what does the first law of thermodynamics state about energy? energy can be created but not destroyed. energy is constantly being lost in any reaction. energy cannot be created or destroyed, only changed in form or moved. energy always flows from a colder object to a hotter object.

Explanation:

The first law of thermodynamics (also known as the law of conservation of energy) states that energy cannot be created or destroyed, only transformed from one form to another or transferred between systems. Let's analyze each option:

• The first option ("Energy can be created but not destroyed") is incorrect because the first law says energy can't be created.
• The second option ("Energy is constantly being lost in any reaction") is incorrect; energy is conserved, not lost (though it can be dissipated, but the total energy remains).
• The third option ("Energy cannot be created or destroyed, only changed in form or moved") matches the first law's definition.
• The fourth option ("Energy always flows from a colder object to a hotter object") is incorrect; heat (a form of energy transfer) flows from hotter to colder objects (second law - related to entropy and heat transfer direction).

Answer:

The option: Energy cannot be created or destroyed, only changed in form or moved.