SIT & START
Complete exercise 4 and 5 of the book p54-55.
15 minutes
Learning Objectives
1. TBAT describe covalent bonding in terms of
orbital overlap and the concept of
hybridization. [LO 3.2b]
2. TBAT explain the shapes of, and bond angles
in, molecules by using the electron-pair
repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
The shape and bond angles of covalently
bonded molecules depend on:
1. The number of pairs of electrons around
each atom
2. Whether these pairs are lone pairs or
bonding pairs
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of
hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electronpair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
Order of repulsion:
Lone pair-lone pair
Lone pair-bond pair
Bond pair-bond pair
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of
hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electronpair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of
hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electronpair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
Use molecule box!
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of
hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electronpair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of
hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electronpair repulsion model. [LO 3.2c]
Electron pair-repulsion
dictates the structure of molecules
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
TASK
Complete exercise 4.3
What is left is HW.
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
SIT & START
What are the angles of:
1 minute!
Instructions
Watch the clips.
When finished complete the exercises.
Update your LO overview.
New topic σ-bonds and π-bonds.
HW complete 4.5 of hand-out.
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
HYBRIDIZATION
https://www.khanacademy.org/science/chemistry
/chemical-bonds/hybridization-and-hybridorbitals-chemistry/v/sp3-hybrid-orbital-jay-final
https://www.khanacademy.org/science/chemistry
/chemical-bonds/hybridization-and-hybridorbitals-chemistry/v/sp2-hybridization-jay-final
https://www.khanacademy.org/science/chemistry
/chemical-bonds/hybridization-and-hybridorbitals-chemistry/v/sp-hybridization-jay-final
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
HYBRIDIZATION
When completed the movies.
PRACTICE:
https://www.khanacademy.org/science/chemistry
/chemical-bonds/hybridization-and-hybridorbitals-chemistry/e/bond-hybridization-quiz
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
SP HYBRIDIZATION
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
sp2 HYBRIDIZATION
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
sp3 HYBRIDIZATION
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
sp3 HYBRIDIZATION
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Mixing of s and p orbitals
sp3 HYBRIDIZATION
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
Other orbital overlaps
σ-bonds and π-bonds
https://www.khanacademy.
org/science/organicchemistry/gen-chemreview/hybrid-orbitalsjay/v/sp3-hybridizedorbitals-and-sigma-bonds
https://www.khanacademy.
org/science/organicchemistry/gen-chemreview/hybrid-orbitalsjay/v/pi-bonds-and-sp2hybridized-orbitals
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]
TASK
Exercise of the hand-out 4.5.
1.
2.
TBAT describe covalent bonding in terms of orbital overlap and the concept of hybridisation. [LO 3.2b]
TBAT explain the shapes of, and bond angles in, molecules by using the electron-pair repulsion model. [LO 3.2c]