Question

An industrial chemist is studying a sample of an unknown metal. Describe two ways he could change the metal physically and two ways he could change the metal chemically to try to identify it.

Answer 1

Physical: slicing or cutting and painting it with a different color

Chemical: rusting

Answer 2

Heat the metal until it melts (physical change).

Attempt to react the metal with oxygen (chemical change).

Stretch the metal into a wire (physical change).

Attempt to react the metal with acid (chemical change).