1. Ionic Compounds

2. Review
The reactivity of an atom is primarily dependent on the valence shell
If the valence shell is full, the atom is non-reactive
For example: the noble gases
The easier it is to fill the shell, the more reactive the atom will be
For example: sodium (1 valence electron) will be more reactive than magnesium (2 valence electrons) because it is easier to give up one electron than two

3. Review
The reactivity of an atom is primarily dependent on the valence shell
If the valence shell is full, the atom is non-reactive
For example: the noble gases
The easier it is to fill the shell, the more reactive the atom will be
For example: sodium (1 valence electron) will be more reactive than magnesium (2 valence electrons) because it is easier to give up one electron than two
The valence shell can be filled in two ways:
By gaining electrons
By losing electrons

4. Review
The reactivity of an atom is primarily dependent on the valence shell
If the valence shell is full, the atom is non-reactive
For example: the noble gases
The easier it is to fill the shell, the more reactive the atom will be
For example: sodium (1 valence electron) will be more reactive than magnesium (2 valence electrons) because it is easier to give up one electron than two
The valence shell can be filled in two ways:
By gaining electrons
By losing electrons
The process of gaining or losing electrons is referred to as ionization
Atoms who have lost or gained an electron are called ions
Positively charged ions are called cations
Negatively charged ions are called anions

5. Review For example: Sodium One valence electron
Easiest way to have a full valence shell is to lose this one electron
After losing the electron, sodium will have an ionic charge of 1+ because it has one more proton than electron

6. Review For example: Fluorine Seven valence electrons
Easiest way to fill valence shell is to gain one electron
After gaining one electron, fluorine will have an ionic charge of 1-

7. What happens when an atom of sodium is put next to an atom of fluorine?

8. What happens when an atom of sodium is put next to an atom of fluorine?
Fluorine is happy to accept the electron sodium wants to give up

9. What happens when an atom of sodium is put next to an atom of fluorine?
Fluorine is happy to accept the electron sodium wants to give up

10. What happens when an atom of sodium is put next to an atom of fluorine?
After sodium gives its valence electron to fluorine, sodium will have a positive charge and fluorine will have a negative charge

11. What happens when an atom of sodium is put next to an atom of fluorine?
After sodium gives its valence electron to fluorine, sodium will have a positive charge and fluorine will have a negative charge
What happens when a positively charged object is near a negatively charged object? 1+ 1-

12. What happens when an atom of sodium is put next to an atom of fluorine?1+ 1-
Attraction

13. What happens when an atom of sodium is put next to an atom of fluorine?
The attraction between a negatively charged ion and a positively charged ion is called an ionic bond 1+ 1-
Ionic bond

14. What happens when an atom of sodium is put next to an atom of fluorine?
The attraction between a negatively charged ion and a positively charged ion is called an ionic bond
When two or more ions are bonded together, we refer to them as an ionic compound 1+ 1-
Ionic bond

15. Properties of ionic compounds
Ionic compounds tend to form lattice structures

16. Properties of ionic compounds
Ionic compounds tend to form lattice structures
Ionic compounds dissolve in water
Water molecules have a slight charge which pulls the anions and cations apart

17. Properties of ionic compounds
Ionic compounds tend to form lattice structures
Ionic compounds dissolve in water
When dissolved, ionic compounds are good conductors

18. Properties of ionic compounds
Ionic compounds tend to form lattice structures
Ionic compounds dissolve in water
When dissolved, ionic compounds are good conductors
Recall that electricity is the movement of charged particles

19. Properties of ionic compounds
Ionic compounds tend to form lattice structures
Ionic compounds dissolve in water
When dissolved, ionic compounds are good conductors
Recall that electricity is the movement of charged particles
Ions themselves are charged particles