Intermolecular Forces... and stuff?

Question 1

Ionic compounds

Answer 1

-High melting pt.
-high boiling pt.
-Crystalline solid at room temp.
-Typically soluble
-No smell
-Conductors in liquid/gas

Question 2

Formula unit

Answer 2

Smallest piece of an ionic compound that is electronically neutral

Question 3

Molecular compounds

Answer 3

-Smelly
-Low melting/boiling
-Low solubility
-Poor conductor

Question 4

Metals of antiquity

Answer 4

Seven metals found/used in prehistoric times
-Gold, silver, copper, iron, mercury can still be found in native forms
-Tin, lead can be smelted

Question 5

How many bonds does H form

Answer 5

1

Question 6

How many bonds does O form

Answer 6

Usually 2 (can be 3)

Question 7

How many bonds does N form

Answer 7

3

Question 8

How many bonds does C form

Answer 8

4

Question 9

How many do B form

Answer 9

3

Question 10

How many bonds do halogens form

Answer 10

1

Question 11

Octet rule

Answer 11

Elements combine to have full shell

Question 12

Sub-octet

Answer 12

Boron forms compounds w/ only 6 electrons

Question 13

Hypervalent compounds

Answer 13

Main group elements form more bonds (Generally 3rd period)
-contribute to size

Question 14

Intermolecular forces

Answer 14

-Force of repulsion/attraction
-Weaker than covalent bonds (More make stronger though)
-Collectively known as Van der Waals forces

Question 15

London dispersion

Answer 15

-All molecules
-Electrostatic attraction b/w protons/electrons of diff. molecules
-Electrons can be attracted to protons of another molecule causing weak attraction
-Strength depends on number/size

Question 16

D-D

Answer 16

• the attraction between two dipoles of different molecules is called the dipole-
  dipole force
• the strength of the dipole-dipole force is dependent on the polarity of the
  molecule