Chemical Bonding

Question 1

Compound

Answer 1

Formed when two or more different elements are chemically bonded

Question 2

Ionic Bond

Answer 2

result from the transer of electrons from a metal to a non metal

Question 3

Covalent Bond

Answer 3

results from the sharing of electrons between the atoms, usually found between nonmetals

Question 4

Ion

Answer 4

a charged atom or group of atoms

Question 5

Valency

Answer 5

the number of hydrogen atoms with which each atom of the element combines

Question 6

sigma bond

Answer 6

two s or px orbitals overlap

Question 7

pi bonds

Answer 7

if the py orbitals are occupied when the px orbitals overlap then they will also overlap
two py orbitals and two pz prbitals overlap

Question 8

2 bond pairs

Answer 8

-linear
-180 degrees

Question 9

3 bond pairs

Answer 9

-trigonal planar
-120 degrees

Question 10

4 bond pairs

Answer 10

-tetrahedral
-109.5 degrees

Question 11

5 bond pairs

Answer 11

-trigonal bipyramidal
-90 and 70 degrees

Question 12

6 bond pairs

Answer 12

-octahedral
-90 degrees

Question 13

Polar Covalent Bond

Answer 13

a covalent bond where there is an unequal sharing of the bond pair of electrons
causes one end of the bond to be slightly positive and the other slightly negative

Question 14

Van der Waal Forces

Answer 14

-weak attractive forces between non polar molecules due to the presence of temporary dipoles
-electrons unequally shared
-more enery required to break bonds
-higher melting and boiling points

Question 15

Dipole - Dipole Forces

Answer 15

-forces of attraction between the negative pole of one polar moleculer and the positive pole of another polar molecule
-dipoles are permanent so they’re stronger than vanderwaal forces
-higher boiling point than VdW forces