1. Polarity

2. Polarity –a positive and negative end.
Bond Polarity – a covalent bond where the electronegativity difference between the atoms is greater than 0.4 but less than The higher electronegative element is the negative end of the bond (the low electronegative element is the positive end).
Polar Molecule– the entire molecule has a positive and a negative end.

3. Bond Polarity
C-H Bond
C-F Bond
N-Cl Bond

4. Polar Molecules are a result of molecular Geometry (use VSEPR)
ABE Formula
Shape
Polarity
AB2
AB2E
AB2E2
AB3
AB3E
AB4

5. For Ionic Compounds….
All Ionic Compounds are POLAR…. The cation is the + ion and the anion is the – ion. Example: CsF

6. When Making a solution….remember that…
Solute—substance being dissolved
Solvent—what does the dissolving
“Like dissolves like”—means
Polar molecule solvents dissolve polar solutes AND
Non-polar solvents dissolve non-polar solutes
Water = polar alcohol=non-polar

7. Would water dissolve….
CaF?
CF4?