Why haven't scientists been able to study atoms directly?

Unfortunately, our progress has been hindered by technological limits. Atoms are unimaginably tiny, beyond our comprehension.

Just to give you some context:

On average, one single human cell, a microscopic organism, contains about 100 trillion atoms.

Only one reactant yields 2 or more products. meaning you will only have 1 product and it will break down into 2 or more products. eg. h2o -> h2 + o2