Atoms are made up of electrons,neutrons, and protons. The protons and neutrons are what the nucleus is made up of. Nucleus has an overall positive charge as protons have a positive charge neutrons have a neutral charge(no charge) and electrons have a negative charge.
Protons+1
Neutrons0
Electrons-1
Protons weight 1
Neutrons 1
Electrons weight 0 rounded
Electrons surround the nucleus
The first electron shell can keep 2 electrons
The second 8 electrons
The third 8 electrons
The fourth eight electrons
Atoms are the smallest particle that can take part in a chemical reaction
