If the oxidation number of the metal is +2, calculate the molar mass of the metal. in g/mol
Most materials will expand when they are heated. That's why they call it the coefficient of thermal expansion, measured in parts per million. Most metals, steel, aluminum, et. al are in this group. A very few materials shrink when heated, due to odd crystalline structure.
metal expands when heated contract when cooled
Heating a metal will cause it to expand (swell).
I guess you are asking a serious question. Heat makes metal expand, it is why they put expansion joints in metal structures. To see a simple example take a look at railway lines, they will be almost tight in the summer but there is space in colder months.
