>>12264385I'm not sure what exactly you mean by
>whether the smallest, simplest material objects are uniform or whether there are multiple types of themIf all you're asking is whether fundamentally things consist out of a single type of "lego brick" or if there are multiples ones, then the answer is that (as far as we know) there are multiple ones although whether it's as simple as there being a "smallest, simplest object" is kinda questionable.
Reality seems (again as far as we know) to be made out of fields. What's a field? Well that's kinda hard to answer without going into the math, but an example of a field that you're familiar with is the electromagnetic field. In school you may have learned that a magnet generates a magnetic field, but that's not quite right. The field was always there and in fact permeates the entire universe. The magnet just changed the field's strength in the area surrounding it. That's what you see in picture it's the impact of the magnetic field on the iron filings.
Now the story get a bit more complicated, because the fields that we consider fundamental are quantum fields, but I don't have a good way of explaining them. Suffice it to say fields are not just responsible for forces as in the magnet example, but also for matter. Roughly speaking if a matter field's strength at one point in space is enough we may detect a particle of the corresponding field there(really simplified, not exactly correct).
Point being, what's fundamental are the fields, not the particles and for each type of matter particle we know there is a field. As it turns out we know there are a variety of matter particles and in turn multiple fundamental matter fields.
I hope that answer you question. No it's not only one smallest, simplest material object nor are they objects as we would usually think of them either!
