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Why does a piece of steel heat up more than an equal mass of plastic when both absorb the same heat?
Wiki User
∙ 12y ago
Steel has a heat capacity of about 0.49 kJ/kg/°C.
Solid plastics have a heat capacity of about 1.67 kJ/kg/°C.
It thus takes more energy to warm plastic 1 °C than to warm steel 1 °C.
As to why steel has a higher heat capacity than plastic...
It may be because plastics have more ability to absorb energy into the vibrational modes of the atoms in the long polymer chains than steel does in its fairly fixed crystaline/metal structure.
Wiki User
∙ 12y ago
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