Question

A worker takes a mixture of cast iron and steel metal and places it inside a furnace that reaches 1500°C. The molten cast iron is poured into a mold. The mold is hung out to dry. Later, the worker removes a cast iron skillet from the mold. What two phase changes occured in order to make the skillet?

Answer 1

The two phase changes that occurred in making the skillet are solid to liquid and liquid to solid.

Phase refers to a homogeneous form of a substance that is physically distinctive.

Two phase changes occurred in making the skillet as follows;

1) When the mixture of cast iron and steel metal was placed in the furnace at 1500°C, a phase change from solid to liquid occurs as molten cast ion is formed.

2) The second phase change occurs when the molten cast iron dries up in the mold. This is a change from liquid to solid phase.

Hence, the two phase changes that occurred in making the skillet are solid to liquid and liquid to solid.

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