1. Which of the following is a chemical property of matter? a. melts at 650°C
b. density of 1.0 g/mL
c. forms molecules with two oxygen atoms
d. mass of 10 g
e. has six protons

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.

yes the answer is total mass in unchanged   : )