Question

which substance can change its state on cool temperature? 1) iron 2) mercury 3)gold 4) gallium​

Answer 1

Explanation:

Mercury is the correct answer.

Answer 2

your correct option is 4) gallium

Argonne continues to pioneer the use of liquid metals as the cooling fluid and has adopted liquid gallium as the liquid metal of choice. Its low melting point, 29.7 °C and its very low vapor pressure make it an easy fluid to handle and its high thermal conductivity and heat capacity make it an excellent cooling fluid.