Look at the diagram below- what evidence is there that it
represents a chemical change?

The second one resprents a chemical change because a chemical change is when a new substances is combined with the other substances to form a new substances

Explanation:

The diagram with the orange and grey in the middle plus the orange and white that is what the other substance created.

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.