Question

heat transfer between two substances is affected by specific heat and the
chemical composition of the substances.
state of matter of the substances at room temperature.
thermal equilibrium of the substances.
amount of time and area of physical contact between the substances.

Explanation:

Heat transfer between two substances is indeed affected by the amount of time and the area of physical contact. The formula for heat transfer \(Q = k\frac{\Delta T}{d}A t\) (where \(k\) is thermal conductivity, \(\Delta T\) is temperature difference, \(d\) is thickness, \(A\) is area, and \(t\) is time) shows the dependence on area \(A\) and time \(t\). Chemical composition affects specific heat (already mentioned in the question), state of matter at room - temperature is not directly a factor in the basic heat - transfer equations for conduction (the main mode considered here), and thermal equilibrium is the end - state of heat transfer, not a factor affecting the process of heat transfer.

Answer:

amount of time and area of physical contact between the substances.