15-6: Polarity and Solubility

Question 1

Polar Bonds

Answer 1

• uneven sharing of electrons
• x > 0.4 for electronegativity difference

Question 2

Non polar bonds

Answer 2

• even sharing of electrons
• x < or = 0.4 for electronegativity difference

Question 3

Polar molecules

Answer 3

• there is a + and - end
• asymmetrical

Question 4

Asymmetrical

Answer 4

1. Two electrons on the center atom
2. At least 1 polar bond + outer atoms are different

Question 5

Non polar molecules

Answer 5

1. Symmetrical (all outer atoms are the same)
2. All non polar bonds

Question 6

Soluble in water vs non soluble in water

Answer 6

Soluble: ionic, polar molecules
Insoluble: non-polar

Question 7

Soluble and non soluble in water

Answer 7

Soluble: ionic, polar molecules
Insoluble: non-polar

Question 8

The principle is ___ dissolves ____.
_____ and _____ substances dissolve in polar solvents.
_____ substances dissolve in non polar solvents.

Answer 8

1. Like; like
2. Polar; ionic
3. Non polar