What is true about energy?

energy cannot be created during an ordinary chemical reaction.

energy is used up during an explosion.

there is more energy after a chemical reaction than before the reaction.

when water melts, energy is created in the form of heat.

The correct answer is option A. Energy cannot be created during an ordinary chemical reaction. There is no such thing as an ordinary chemical reaction. Energy cannot be created or destroyed this is according to the law of conservation of energy. It can only be transformed from one form to another form.

Among these statements, the correct notion about energy is that energy cannot be created during an ordinary chemical reaction. this follows the law of conservation of mass which states that energy is neither created nor destroyed in any processes.