A student places two 100.0 g samples—one of liquid water and one of solid copper—on…
PHYSICS · Multi-part · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
A student places two 100.0 g samples—one of liquid water and one of solid copper—on identical hot plates set to deliver 500. J of thermal energy over a 30 s interval. After exactly 30 s the hot plates are switched off.
Assume that all 500. J of energy is absorbed by each sample and that no energy is lost to the surroundings.
(a) Predict which sample undergoes the larger temperature increase and justify your prediction in terms of intrinsic particle-level properties of the two substances.
(b) Without performing a detailed numerical calculation, explain how the numerical values of the specific heat capacities of water and copper lead to the prediction in part (a).
(c) The student claims that the temperature change of the water would equal that of the copper if the heat supplied were doubled to 1.00 kJ. Evaluate the validity of this claim and support your reasoning qualitatively.