Atom, Smallest unit of matter, Electron, The negative part of an atom, Atomic number, The number that tell you the number of protons in an element., Proton, The positive part of an atom, Element, One type of atoms, Atomic mass, Tells you the number of protons and neutrons together., Nucleus, The centre of the atom; Contains neutrons and protons, Neutron, The part of the atom with no charge

Atoms and elements

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