Draw the Lewis structure of nitroethane CH3CH2NO2, and formal charge

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?