Question

to change the state of an object, for example, from a solid to a liquid, you need to know the starting temperature of the solid, its mass, and the nature of the solid to determine how much

is needed to change it to a liquid.

Explanation:

When changing the state of an object (e.g., solid to liquid), the starting temperature, mass, and nature (specific heat capacity and latent heat properties) of the solid are factors. The key concept here is that heat energy is required for phase - change. The formula for heat energy \(Q = mc\Delta T+mL_f\) (where \(m\) is mass, \(c\) is specific heat capacity, \(\Delta T\) is temperature change, and \(L_f\) is latent heat of fusion) shows that heat (\(Q\)) is needed.

Answer:

heat