question 21 of 31 what happens to iron when it melts? a. it undergoes a chemical change. b. its atoms…

question 21 of 31 what happens to iron when it melts? a. it undergoes a chemical change. b. its atoms combine and form new atoms. c. it undergoes a physical change. d. its atoms break apart and form new atoms.

question 21 of 31 what happens to iron when it melts? a. it undergoes a chemical change. b. its atoms combine and form new atoms. c. it undergoes a physical change. d. its atoms break apart and form new atoms.

Answer

Brief Explanations:

Melting is a physical - state change from solid to liquid without altering the chemical composition of the substance. Iron melting is a phase transition and not a chemical reaction where new substances are formed. Atoms do not combine or break apart to form new atoms during melting.

Answer:

C. It undergoes a physical change.