Question

esson 42-classification of materi
gallium spoon melting is a
physical change because a
puddle of ______ metal is left
afterwards.
(1 point)
steel
iron
aluminum
gallium

Explanation:

A physical change is a change in which no new substance is formed. When gallium spoon melts, only the state of gallium changes from solid to liquid. The metal left is still gallium. Steel is an alloy, iron and aluminum are different metals from gallium.

Answer:

gallium