Question 11 (1 point)
Cast-iron skillets take longer to heat up than copper ones, but they hold their heat
longer. Why?

- Copper and iron have the same specific heat.

-Iron has a higher specific heat than copper.

- Copper has a higher specific heat than iron

Iron has a higher specific heat than copper.

Option: B

Explanation:

The Specific heat of copper is 385 J whereas the specific heat of Iron is 450 J. So it obviously shows that Iron has more specific heat than Copper.

Iron takes more energy to heat than copper but it stores more energy when heated than copper. So it takes more time to heat the iron skillet than the copper vessel. But once heated, iron vessels store more energy when heated than copper ones. Also it depends on the molecular structure of the elements. Cast Iron has a structure of iron crystals and amorphous carbon atoms whereas Copper has a regular structure. Since cast iron has less organized structure more energy is required to vibrate the atoms.

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

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