Question

periodic table notes #1
round 1: read through this page and see what you can answer from memory. you should be able to fill in most of the first page.
each element (atom) can be represented by a model. the model, like the one to the left, would contain all the subatomic particles of an atom which are the _, _, and the _.

Explanation:

Atoms are composed of three main subatomic particles. Protons are positively - charged particles found in the nucleus. Neutrons are neutral particles also in the nucleus. Electrons are negatively - charged particles that orbit the nucleus.

Answer:

Protons, Neutrons, Electrons