1. Atoms and Ions
Textbook 5.5

2. Learning goals
We are learning to draw Bohr and Lewis dot diagrams for ions.
We are learning to calculate charges on ions.

3. ions
Atoms that have an unequal amount of protons and electrons are called ions.
Two types:
Cations (positive ions): # of electrons < # of protons
Anions (negative ions): # of electrons > # of protons
Metals form cations
Non-Metals form anions.

4. sodium Draw Sodium’s Bohr diagram Draw Sodium’s Bohr Ion diagram
Draw Neon’s Bohr diagram

5. fluorine Draw Fluorine’s Bohr diagram Draw Fluorine’s Bohr Ion diagram
Draw Neon’s Bohr diagram

6. Aluminum & Sulfur You try it with your elbow partner!!!
Draw Bohr diagram and Bohr Ion diagram

7. Naming ions Cations Anion Positive charge Sodium  sodium ion Na1+
Negative charge
Fluorine  fluoride
F1-

8. Learning goals
We are learning to draw Bohr and Lewis dot diagrams for ions.
We are learning to calculate charges on ions.

9. Please complete
Counting Particles activity
Ions and the PT funsheet

10. Please complete
P191 #4, 5, 6, 7, 8