Question

The total amount of energy before and after a chemical reaction is the same. Thus, energy is A. conserved. B. created. C. destroyed. D. the same as mass.

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

The law of conservation of energy states that energy can neither be created nor it can be destroyed. It can only be transformed from one form to another.

Therefore, the total amount of energy before and after a chemical reaction is the same. Thus, energy is conserved.

Therefore, we can conclude that option (a) is the correct answer.

Answer 2

Answer: A. conserved

Explanation: According to the law of conservation of energy, energy can neither be created nor be destroyed, and remains conserved. The energy is transformed from on form to another.

For example: When coal is burnt, the chemical energy stored in the bonds of carbon are converted to light and heat energy.

The mechanical energy of the wind is converted into electrical energy by the use of turbines.