Students measure the energy given off by a burning peanut as it heats 100 milliliters of water.

Question

How is energy conserved in this experiment?

Answer options with 4 options
A.
The chemical energy in the peanut is changed to electrical energy.

B.
The heat energy in the peanut is changed to chemical and light energy.

C.
The heat energy in the peanut is changed to chemical and sound energy.

D.
The chemical energy in the peanut is changed to light and thermal energy.

Answer 1

The correct answer is:

D. The chemical energy in the peanut is changed to light and thermal energy.

In this experiment, the chemical energy stored in the peanut is released during combustion, producing heat (thermal energy) and some light energy as the peanut burns. The heat generated warms the water, demonstrating energy conservation as it transforms from one form to another.