Question

A ring made of gold is heated and then hammered into a flat, coin-like shape. Is this a physical change? Explain.

Answer 1

Yes. a physical change is only modifying the structure of it.

a chemical change is permanently changing something.

cutting cheese into slices is a physical change

cooking an egg is a chemical change

Answer 2

Yes,
this would be a physical change because the chemical composition is not being effected. When you change the shape of gold, it will remain gold but have a different look.