Question

2. What happens when each of the following metals are heated
a. Iron
b. Gold
c. Copper?
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Answer 1

Answer:

Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion. ... Thermal expansion occurs because heat increases the vibrations of the atoms in the metal

Answer 2

Explanation:

when iron is heated in aur it forms iron oxide

gold does onot react esaily with air on heating

copper reacts to form copper oxide