Specific latent heat: Q = mL

Pick melting or boiling and a mass to see the energy needed for the change of state, with no change in temperature.

Works in metric or imperial units.

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Questions students ask

Why does temperature stay the same while ice melts?

The energy goes into breaking the bonds between particles, not into making them move faster, so the temperature holds until all of it has melted.

What formula does it use?

Q = mL: energy (J) = mass (kg) × specific latent heat (J/kg).

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