If a chemical change requires energy, which of the following could be the source of the energy? select one: a. settling the mixture for 20 minutes b. adding more substance to the observed material c. measuring mass from a beam balance d. heating with a flame

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.

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