Why a steel ball sinks in water but floats on mercury

Mercury is a thick substance and able to sustain and hold anything with any metallics with metal, such as with water it is not working as water is a thin substance and not able to hold heavy things

Explanation:

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock