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.

Explanation:

• Physical changes: Measure density by finding mass and volume. Hammer the metal to check malleability.
• Chemical changes: React the metal with an acid to see if hydrogen gas is produced. Expose the metal to air over time to check for oxidation.

Answer:

• Physical changes: Measure density, Check malleability.
• Chemical changes: React with acid, Expose to air for oxidation.