7th inning stretch PCl3 2. SCl2 3. CS2 4. CH4

Slides:

Advertisements

Similar presentations

Lewis structures & molecule shapes. AB or AB 2 – linear If there are only two atoms the shape will be linear – there are no If there are only two atoms.

Advertisements

SHAPES OF MOLECULES. REMINDER ABOUT ELECTRONS  Electrons have negative charges  Negative charges “repel” each other  In molecules, electrons want to.

Drawing Lewis Structures and VSEPR. Draw basic Lewis dot structures of atoms and compounds. Using VSEPR, predict bond shape from electron arrangement.

Drawing Lewis Structures and VSEPR. Draw basic Lewis dot structures of atoms and compounds. Using VSEPR, predict bond shape from electron arrangement.

METALLIC BOND bond found in metals; holds metal atoms together very strongly.

B. Ionic bonding and Structures of Ionic Compounds

Molecular Shape and Polarity The Importance of Geometry in Determining Physical Properties.

Section 3.3 – Part A Pg Objective: 1) Apply VSEPR theory to predict molecular shapes.

Molecular Shape and Polarity The Importance of Geometry in Determining Physical Properties.

IIIIII Molecular Geometry Molecular Structure. A. VSEPR Theory  Valence Shell Electron Pair Repulsion Theory  Electron pairs orient themselves so that.

IIIIII I. Lewis Diagrams Molecular Structure. A. Octet Rule n Remember…  Most atoms form bonds in order to have 8 valence electrons.

Lewis Dot Structure.  Predicts Molecular Structure (Shape)  Looks at Central Atom of the Compound  # Electron pairs,  Bonded  Non-Bonded  Electrons.

MOLECULAR SHAPES. What is the shape of this gerber daisy? Looks two-dimensional but in reality it is three-dimensional.

VSEPR. This is the shape that CO 2 makes. 1. Linear 2. Bent 3. Trigonal planar 4. Tetrahedral 5. Trigonal pyramidal 6. Trigonal bipyramidal 7. See-saw.

VSEPR Theory Valence Shell Electron Pair Repulsion.

Chemistry Unit 4 Chapter 8.  Molecule  A neutral group of atoms joined together by covalent bonds  Molecular Compound  Tend to have lower melting.

VSEPR Theory Valence Shell Electron Pair Repulsion.

Chemical Bonding 1.

Warm Up – Name or Write the following compounds

CHAPTER OUTLINE Electronegativity Polarity & Electronegativity

Chapter 5. Covalent Compounds (Molecular Compounds)

Drawing Lewis Structures and VSEPR

Valence Shell Electron Pair Repulsion Theory

H C Valence Shell Electron Pair Repulsion Theory 2p 2s 1s Ken Rogers

Shapes of molecules 1) sketch the Lewis structure 2) locate the central atom 3) count regions of electron density around the central atom double/triple.

Molecular Geometry Cocaine

CHEMICAL BONDING Cocaine

TOPIC: Molecular Geometry (Shapes of Molecules) Essential Question: How do you determine the different shapes of molecules?

Chemistry Jacqueline P. Hancock

Timberlake LecturePLUS

ValenceShellElectronPairRepulsion

Ch. 6 – Molecular Structure

Molecular Shapes.

Valence Shell Electron Pair Repulsion Theory

Molecule Shapes Learning Goals: Students will be able to:

Valence Shell Electron Pair

Electron Sharing can be EQUAL or UNEQUAL

Ch. 6.5 Bonding Theories Molecular Geometry.

Valence Shell Electron Pair Repulsion Theory (VSEPR)

Bellwork Monday Draw the following Lewis dot structures. CCl4 NH4+

Valence Shell Electron Pair Repulsion

MOLECULAR GEOMETRY Bonding Unit.

II. Molecular Geometry (p. 183 – 187)

Ch. 6 – Molecular Structure

Chapter 8 Section 3 Molecular Structures.

Molecular Shape & Geometry

Molecular Structure Molecular Geometry.

All shapes came from Shapes of Molecules All shapes came from

Valence Shell Electron Pair Repulsion Theory

Molecular Structure and Shape

ChemicalBonding Honors Only Problems and questions —

Shapes of molecules and ion

Valence Shell Electron Pair Repulsion Theory

CHEMICAL BONDING By Mrs. Idha Nurhayati, SPd. Cocaine

VSEPR & Geometry Lewis structures show the number and type of bonds between atoms in a molecule or polyatomic ion. Lewis structures are not intended to.

Explain what the VSEPR Theory is

Molecular Structure II. Molecular Geometry.

CHEMICAL BONDING Cocaine Chemistry I – Chapter 8

Unit 9: Covalent Bonding

II. Molecular Geometry (p. 183 – 187)

Unit 9: Covalent Bonding

Molecular Shapes Mrs. Chan.

6.5 VSEPR Theory and Molecular Shapes

Valence Shell Electron Pair Repulsion

II. Molecular Geometry (p. 183 – 187)

II. Molecular Geometry (p. 183 – 187)

Valence Shell Electron Pair Repulsion Theory

CHEMICAL BONDING Cocaine Chemistry I – Chapter 8

CHEMICAL BONDING Cocaine Chemistry I – Chapter 8

Presentation transcript:

7th inning stretch PCl3 2. SCl2 3. CS2 4. CH4 Draw the Lewis structure for each: PCl3 2. SCl2 3. CS2 4. CH4

7th inning stretch PCl3 2. SCl2 3. CS2 4. CH4 Draw the Lewis structure for each: PCl3 2. SCl2 3. CS2 4. CH4

The lewis structure of water: unshared e- .. : H 2 X 1e- =2e- __ O H H O Shared e- 1 X 6e- =6e- Total 8e- - 4e- bonded 4 e- Water has 2 shared & 2 unshared pairs of e-

- + What did you observe?

e- move towards the protons

What holds electrons in an atom?

e- like protons

Do electrons like each other electrons?

NO

- - What did you observe between the electrons?

e- Repel e- move as far away from each other…..

However, they do exist in pairs (remember two per e- cloud shape)

Draw the following table: V S E P R THEORY Draw the following table: # of Total Pairs # Shared e- Pairs # Unshared e- Pairs Shape Picture Examples

V S E P R linear 2 2 0 Trigonal Planar 3 3 0 4 3 1 Pyramidal 4 4 0 THEORY # of Total Pairs # Share e- Pairs # Unshared e- Pairs Shape Picture Examples linear CO2 Cl2 2 2 0 Trigonal Planar BCl3 CH2O 3 3 0 NH3 PCl3 4 3 1 Pyramidal CH4 CBr4 Tetrahedral 4 4 0 SCl2 H2O 4 2 2 Bent

Pyramidal

Bent

Molecule Phet

CO2 CaCl2 NH4Cl Li2SO4 Which is a molecule? Make sure to ask :How did you decide? A because it has only non-metals; Remind students that ionic compounds made of metals-nonmetals or polyatomic ions are not.

2. Which would have a linear shape? HBr CO2 Both are linear C

3. Which has only single bonds? HBr CO2 Both have all single bonds A

4. What shape is water? Tetrahedral Bent Trigonal planar Linear B

5. Which is an example of an exception to the octet rule? BF3 I2 More than one of these Make sure to ask :How did you decide? C

5ans. Which is an example of an exception to the octet rule? BF3 I2 More than one of these Make sure to ask :How did you decide? C

6. Which molecule could be represented with this diagram? BH3 CH4 NH3 C

7. Which molecule could be represented with this diagram? HCl CH4 NH3 F2 A