Question

The water molecule absorb energy from surroundings, this energy is called as ______________.

• A. Molecular energy
• B. Latent energy
• C. Heat energy
• D. None of these

Answer 1

Answer: (B)

Latent energy

B. Latent Energy

Latent heat is the energy absorbed by or released from a substance during a phase change from a gas to a liquid or a solid or vice versa. If a substance is changing from a solid to a liquid, for example, the substance needs to absorb energy from the surrounding environment in order to spread out the molecules into a larger, more fluid volume. If the substance is changing from something with lower density, like a gas, to a phase with higher density like a liquid, the substance gives off energy as the molecules come closer together and lose energy from motion and vibration.