Home > categories > Minerals & Metallurgy > Aluminum Foils > At Standard Pressure, which element at 25°C could undergo a change of phase when the temperature is decreased?
Question:

At Standard Pressure, which element at 25°C could undergo a change of phase when the temperature is decreased?

1.aluminum 2.chlorine 3.silicon 4.sulfur

Answer:

Interesting if perhaps deceptive question! Aluminum, silicon and sulfur are all solids at 25 degrees CThat leaves only chlorine, which could turn from a gas (which it is, at 25 degrees C) to a liquid if the temperature is loweredSo the answer is option 21,3 and 4 remain solids if the temperature is lowered.
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