Final answer:
The law of conservation of energy states that the total amount of energy in the universe remains constant. Energy cannot be created or destroyed, only converted from one form to another.
Step-by-step explanation:
The first law of thermodynamics, also known as the law of conservation of energy, states that the total amount of energy in the universe remains constant. This means that energy cannot be created or destroyed, but it can be converted from one form to another. Energy transfers and transformations occur all around us, such as light bulbs converting electrical energy into light energy and gas stoves converting chemical energy into heat energy.