Question

the law of conservation of energy
no matter what experiments you do in class, the law of conservation of energy requires that energy is neither created nor destroyed.
when energy is transferred or transformed from one system to another in any physical or chemical process, all the energy can always be accounted for.
sometimes the transfer of energy is hard to see, especially in the case of friction. take a book and drop it on the floor. the gravitational potential energy that the book had before it was dropped is transformed to kinetic energy of motion as the book falls. but what happened to the energy when the book hit the floor? all of the kinetic energy of the book transformed into frictional heat of the floor, air, and book, and some amount of sound energy. if you could add up all the final frictional and sound energy, it would equal the gravitational potential energy the book started with. with a few exceptions, such as light energy passing through the vacuum of space, whenever work is done, some energy will be lost as heat.
sep develop models describe the energy inputs and outputs for the campfire. use the law of conservation of energy to construct a valid qualitative equation that includes all the input and output energies involved.
transforming stored energy as the logs burn, chemical reactions occur. energy stored in the logs is transferred to the products of the reactions and transformed to other types of energy.
the logs are fuel for the fire.

Explanation:

Step1: Identify input energy

The input energy is the chemical - energy stored in the logs.

Step2: Identify output energies

The output energies include heat energy (warming the surroundings), light energy (the visible fire), and sound energy (crackling sounds).

Step3: Form the qualitative equation

Chemical energy in logs = Heat energy + Light energy+ Sound energy

Answer:

Chemical energy in logs = Heat energy + Light energy+ Sound energy