Question

which phrase is the correct definition of energy?
chemical change
force
force x distance
the ability to do work
question 2
which type of energy is stored in chemical compounds and released in chemical reactions?
chemical energy
nuclear energy
electrical energy
gravitational energy

Explanation:

• Question 1: Energy is defined as the ability to do work. A chemical change is a process where substances transform chemically. Force is a push or pull. Force × distance is the formula for work ($W = F\times d$).
• Question 2: Chemical energy is stored in chemical compounds (like in the bonds of molecules) and is released during chemical reactions. Nuclear energy comes from the nucleus of atoms (e.g., in nuclear fission or fusion). Electrical energy is related to the flow of electric charge. Gravitational energy is related to the position of an object in a gravitational field.

Answer:

• Question 1: the ability to do work
• Question 2: chemical energy