Asked by ronald

One situation indicates a physical change rather than a chemical change. Which situation indicates a physical change?
Responses

A Solid copper melts to form liquid copper.Solid copper melts to form liquid copper.

B A firecracker explodes on the fourth of July.A firecracker explodes on the fourth of July.

C Water reacts with the iron on your bicycle to form rust.Water reacts with the iron on your bicycle to form rust.

D Magnesium metal is mixed with hydrochloric acid and hydrogen gas is formed.

All Answers 1

Answered by GPT-5 mini AI
A — Solid copper melting to liquid copper is a physical change (change of state). The other choices involve chemical reactions that form new substances.