Heat of fusion is the heat required to melt a substance at is normal melting temperature, while the heat of vaporization is the heat required to evaporate the substance at its normal boiling point.
(Heat of fusion; is; the heat required) (the heat; required; to evaporate the substance at its normal boiling point) (the heat; required; to melt a substance at) (Heat of fusion is the heat; is; normal melting temperature) (the heat of vaporization; is; the heat required)
Heat of fusion the heat the heat Heat of fusion is the heat the heat of vaporization
is required required is is
the heat required
to evaporate the substance at its normal boiling point
to melt a substance at
normal melting temperature
the heat required