| A | B |
|---|
| Nucleus | Contains protons and neutrons |
| Proton | Has a charge of +1 and a mass of 1AMU |
| Neutron | Has no charge and a mass of 1 AMU |
| Electron | Has a charge of -1 and no mass |
| Orbitals | Contain electrons |
| 1st orbital | Can hold up to 2 electrons |
| 2nd orbital | Can hold up to 8 electrons |
| Ion | Has a different number of electrons than protons and neutrons |
| Isotope | Has a different number of neutrons than protons and electrons |
| Atomic number | Equal to the number of protons |
| Atomic Weight | Equal to the number of protons + neutrons |
| Atom | Smallest part of an element that cannot be broken down by ordinary chemical means |
| Element | Pure substance |
| Molecule | Combination of 2 or more atoms tightly bound together |
| Compound | Made up of molecules in equal proportions |
| Mixture | Contains molecules in different proportions |
| Energy | The capacity to do work |
| Kinetic Energy | Energy of Motion |
| Potential Energy | Stored Energy |
