Ascientist who deals with the properties, composition, and reactions of substances

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Why are people not able to scuba dive in the deep part of the ocean

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?