Smallest particle that make up matter is?

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?