Question

with the help of an activity show that diffusion become faster with the increase in temperature

Answer 1

Because when temperature is provided to it the kinetic energy of particles of food increases and gets diffused with the air faster than it takes in case of cold food. By this example we can show that diffusion become faster with the increase in temperature.

Answer 2

when cooked food is cool there is no diffusion when we increase temperature then there will diffusion
the particles of cooked food is mixed with the particles of air