1. Atoms, Ions, & Isotopes pg. 99-103 & 108-113 LO: I can explain the number of protons, electrons, neutrons & overall charge for any element or isotope.

2. Subatomic Particles

3. Element Symbols

4. Element Symbol Element Name Element Mass (A) (protons + neutrons) Unit = amu Atomic Number (Z) Electron Configuration Number of protons & electrons in a neutral atom

5. Atomic Number (Z) Mass Number (A)

6. Ions: Charged Particles Particles become charged when… They gain or lose an electron The overall charge of an element or compound is… ion charge = # of protons - # electrons

7. Ions: Charged Particles

8. Magnesium Sulfur Iron

9. Elements that form predictable ions Cations = Positive ions Anions = Negative ions

10. Isotopes An isotope is… A version of an element having a different number of neutrons. Isotope Notation Periodic Table

11. Isotopes An isotope has… The same chemical properties as neutral element in PT.

12. Isotopes Percent abundant

13. Two Ways to Represent Isotopes

14. Tell us all about it… How many? Protons = _______ Electrons = _______ Neutrons = _______ Charge = ________ Mass = ________ Isotope name: _____________________________