- Proton: Charge = +1, Mass = 1 amu, Location = Nucleus
- Neutron: Charge = 0, Mass = 1 amu, Location = Nucleus
- Electron: Charge = -1, Mass = ~0 amu, Location = Electron cloud (outside nucleus)
- The atomic number tells you the number of protons in one atom of the element. It also tells you the number of electrons in the neutral atom of that element. The atomic number gives the identity of the element as well as its position on the Periodic Table.
- The periodic table is used to calculate the number of protons, neutrons, and electrons in one atom of an element. In order to calculate the number of neutrons, you must subtract the atomic number from the mass number.
- Protons = 50, Neutrons = 69
- Protons = 74, Neutrons = 110
- Name = Bromide, Symbol = Br⁻, Charge = -1
- Name = Potassium, Symbol = K, Charge = 0
- An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons. The number next to an ion signifies its charge (e.g., 2+ means it has lost two electrons).
Parent Tip: Review the logic above to help your child master the concept of chemistry atomic structure worksheet.
