Proton - In the center, positive charge, Neutron - In the center, neutral charge, electron - on the edge, negative charge, Proton - Positive charge, Neutron - no charge, electron - negative charge, electron - no mass, Proton - has a mass, positive charge, Neutron - has a mass, no charge, atomic number - number of protons in an element, atomic mass - Protons + Neutrons, Number of electrons in first outer layer - 2, Number of electrons in second outer layer - 8, what positively and negatively charged ions do - attract, covalent bond - where they share electrons, ionic bond - where one atom gives electrons to another, so both have a full charge,

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