Chemistry is the study of chemistry is the study of matter transformations of matter only macroscopic phenomena only microscopic phenomena both a and b

Correct answer is both A and B.

Explanation:

Chemistry is a branch of science that deals with different substances in recognizing the matter present in them.

For example, chemistry deals with states of matter like solid, liquid or gas.

Also, it tells us about how different substances present in nature react or what is their composition and properties.

Basically, chemistry helps us knowing nature of a matter and how it can be transformed.

Thus, we can conclude that chemistry is the study of matter and its transformation.

its not a choice. you dont choose if you want to be gay or straight.

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.