The only metal that melts at near human body temperature

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Multiple Choice

The only metal that melts at near human body temperature

Explanation:
Metals have a wide range of melting temperatures, and this question points to one that becomes liquid at temperatures close to human body warmth. Gallium melts at about 29.8°C, meaning body heat is enough to turn it into liquid in your hand. That near-body melting point is what makes it unique among the options. Aluminum needs around 660°C to melt, so it stays solid in the hand. Mercury isn’t a candidate here because its melting point is about -38.8°C, so it’s already liquid at room temperature. Gadolinium melts well above 1,300°C, far beyond anything the human body could supply. Because gallium sits just below body temperature, it’s the only one that truly melts in typical human warmth.

Metals have a wide range of melting temperatures, and this question points to one that becomes liquid at temperatures close to human body warmth. Gallium melts at about 29.8°C, meaning body heat is enough to turn it into liquid in your hand. That near-body melting point is what makes it unique among the options.

Aluminum needs around 660°C to melt, so it stays solid in the hand. Mercury isn’t a candidate here because its melting point is about -38.8°C, so it’s already liquid at room temperature. Gadolinium melts well above 1,300°C, far beyond anything the human body could supply. Because gallium sits just below body temperature, it’s the only one that truly melts in typical human warmth.

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