Question

At their melting points, both object A and object B, each with a mass of 3.6 kg, undergo a phase change. If they melt when exposed to 3.8 × 10^4 (fill in the blank), what form of energy is likely involved in the melting process?

Options:
A. Joules of heat
B. Newtons of force
C. Watts of power
D. Kilograms of mass

Answer 1

The form of energy involved in the melting process of objects A and B, which are exposed to 3.8 × 10^4 units of energy, is thermal energy measured in Joules, specifically known as the heat of fusion.

Step-by-step explanation:

At their melting points, objects A and B, each with a mass of 3.6 kg, undergo a phase change when exposed to 3.8 × 10^4 Joules of heat. The form of energy likely involved in the melting process is thermal energy, often measured in Joules. During a phase change such as melting, the energy is used to break the bonds between the molecules, leading to a change in the state of matter without changing temperature. This energy is known as the heat of fusion, and it is directly related to the mass of the substance and the specific latent heat of fusion characteristic to the substance itself.