1. IMF

Question 1

Electronegativity

Answer 1

The ability of an atom to attract electrons to itself

Question 2

Factors affecting strength of dispersion forces

Answer 2

Number of carbon atoms
Shape of molecules

Question 3

Hydrogen bonds

Answer 3

-very strong dipole-dipole interactions
-between lone pair of e- of N, O or F (hydrogen acceptor) and a hydrogen doner
-imporatant as they determine structure + functioning of DNA

Question 4

What are salt bridges in protein?

Answer 4

Ionic bonds formed between oppositely charged ions on a protein strand

Question 5

Drive of hydrophobic interactions

Answer 5

Enthalpy:
The energy cost of creating water-hydrocarbon interactions> the energy from breaking H bonds between H2O molecules.

Entopy:
Less ordered H2O required for compact hydrocarbons (increase in enthalpy) plays a bigger part