Explain the relationship between atoms, neutrons, protons, electrons, and molecules. Give examples using CO2 and H2O

Protons, neutrons and electrons are all inside an atom's nucleus (with electrons orbiting around it and neutrons and protons in the center). In each element (C, O, H etc.) there is a specific number of protons and electrons (must be equal) and neutrons (taking the range of the atomic number and the atomic weight). 1 C, 2 O, 2 H, and 1 O (in CO2 and H2O).