Question

Which of the following is an example of a physical change ?

A. A Piece of iron being heated until it melts

B. Silver jewelry tarnishing

C. A piece of wood burning

Answer 1

A. A piece of Iron being heated until it melts
Because it goes from solid to liquid.
A physical change is changing from solid to a liquid, a liquid to a gas, a gas to a liquid, a liquid to a solid, a solid to a gas, or a gas to a solid.