(6.1) What are atoms? What particles are they composed of? What is the relative location and charge of each particle?

Atoms are the smallest point of matter they are composed of protons nutrons and electrons protons and nutrons are located in the nucleus electrons are in the electron cloud the charge of protons is a positive charge electrons are negative and nutrons are nutrul.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

snell's law

refractve index = sin incidence / sin refraction