Atoms
- Atoms can be made up of Protons, Neutrons, and Electrons
- A Proton has a positive charge.
- An Electron has a negative charge.
- A Neutron has a neutral charge.
- Atomic weight can be found by adding the number of protons and neutrons together.
Molecules
- Particles made up of more than one atom joined together is a molecule.
- Molecules make up many different substances.
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