Question | Answer |
Atom | Smallest particle that an element can be divided into and still be that element |
Subatomic Particles | Particles that make up an atom |
Nucleus | • Tiny, Dense, center of an atom<br><br> • Positive charge |
Proton | • Located in the nucleus <br><br> • Positive charge |
Neutron | • Located in the nucleus <br><br> • Has no charge |
Electron | • Located in a “cloud” outside the nucleus <br><br> • Has a negative charge <br><br> • Usually the same as the number of protons |
Law of Electromagnetic Force | • Particles with the SAME charge repel each other <br><br> • Particles with OPPOSITE charges attract each other |
Isotope | An atom of an element with a different number of neutrons |
Atomic Number | • The number of protons in an atom <br><br> • ALL atoms of the same element have the same number of protons, which means they have the same atomic number |
Mass Number (Atomic Mass) | Neutrons + Protons in an atom |
Quark | Particles that make up neutrons and protons |
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