Question

applying specific heat to baking
mara and patience are making cookies. they are ready to drop balls of dough on baking sheets. they have baking sheets made of treated glass, aluminum, stainless steel, and copper. the specific heats of these substances are:
treated glass = 0.75 j/g·°c
aluminum = 0.90 j/g·°c
stainless steel = 0.50 j/g·°c
copper = 0.39 j/g·°c
based on the specific heat values, which sheet is going to warm up the quickest, and, therefore, bake the cookies the fastest?

Explanation:

Step1: Understand specific - heat concept

The lower the specific heat, the less heat is required to raise the temperature of a substance by 1°C. So, the substance with the lowest specific - heat will warm up the quickest.

Step2: Compare specific - heat values

Given: Treated glass = 0.75 J/g·°C, Aluminum = 0.90 J/g·°C, Stainless steel = 0.80 J/g·°C, Copper = 0.39 J/g·°C.
We can see that copper has the lowest specific - heat value among them.

Answer:

Copper