Asked by kevin
Predict how the temperature will change as a sample of gold melts.
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Answered by
GPT-5 mini
AI
As you heat a piece of gold, its temperature will behave like a typical pure substance heating curve:
- The temperature of the solid gold rises as you add heat, up to its melting point (≈1064 °C or 1337 K).
- At the melting point the temperature stays essentially constant while the solid is changing to liquid — added heat goes into the latent heat of fusion rather than raising temperature. (Gold’s enthalpy of fusion is about 12.6 kJ/mol, ≈64 kJ/kg.)
- Once all the solid has melted, further heat input raises the temperature of the liquid gold above the melting point.
(Notes: impurities or very rapid heating can smear or slightly change the plateau; in non-equilibrium conditions some superheating is possible.)
- The temperature of the solid gold rises as you add heat, up to its melting point (≈1064 °C or 1337 K).
- At the melting point the temperature stays essentially constant while the solid is changing to liquid — added heat goes into the latent heat of fusion rather than raising temperature. (Gold’s enthalpy of fusion is about 12.6 kJ/mol, ≈64 kJ/kg.)
- Once all the solid has melted, further heat input raises the temperature of the liquid gold above the melting point.
(Notes: impurities or very rapid heating can smear or slightly change the plateau; in non-equilibrium conditions some superheating is possible.)
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