Question

The stored energy in a piece of coal can be _________ into heat energy.

Answer 1

The answer is transformed
because you changed the kind of energy

Answer 2

The Law of Conservation of Energy states that energy can either be transferred from one object to another, or transformed from one type to another, but never destroyed. The stored energy in coal is chemical energy because it is ready to react, and when the coal is burned, the chemical energy is transformed by the reaction into heat energy.

Answer: a. transformed

Hope this helps!