Electronegitiviy And Intermolecular Forces

Question 1

What is electronegativity

Answer 1

The ability of an atom to attract shared electrons in a covalent bond

Question 2

How does electronegativity impact a molecule?

Answer 2

It determines bond polarity; molecules with large differences in electronegativity become polar (ex water)

Question 3

What are polar molecules?

Answer 3

Molecules that have partial positive (δ+) and negative (δ−) charges due to differences in electronegativity.

Question 4

Name the three types of intermolecular forces

Answer 4

London forces, dipole-dipole forces, hydrogen bonds.

Question 5

Why is water’s high specific heat capacity important for life?

Answer 5

It helps regulate temperature with minimal changes.

Question 6

What makes water unique?

Answer 6

HB leads to cohesion, adhesion, high specific heat, ice floating, and excellent solvent properties

Question 7

What dose ice float on water?

Answer 7

Ice is less dense due to HBs forming a structural lattice

Question 8

When water molecules form hydrogen bonds with other water molecules it’s called…

Answer 8

Cohesion

Question 9

When water molecules form hydrogen bonds with other polar molecules it’s called…

Answer 9

Adhesion

Question 10

Water has a very high specific heat capacity because of

Answer 10

result of hydrogen bonds
can absorb a lot of heat energy with minimal temperature change
a lot of energy is needed to convert water from a liquid to a g