1. What are the electrical charges and locations of protons, neutrons, and electrons?
2. which subatomic particles contribute to the mass of the atom (atomic mass)?
3. Which subatomic particle identifies as each element?
4. If an atom had 11 protons and 12 neutrons, what would its atomic mass be? Show your work.
5. Can you think of a reason why the electrons in the outer energy levels of an atom contain more energy than electrons in lower closer to the nucleus) energy levels? (HINT: Think about the electrical charges on he nucleus and on the electrons.)