IM/VdW forces are the forces of attraction between molecules – not within the molecule. VdW forces vary in strength depending on the interactions between.

Slides:

Advertisements

Similar presentations

Intermolecular Forces

Advertisements

Sections 11.4 – 11.5 Intermolecular Forces

Intermolecular Forces Chemistry Mrs. Coyle. Intermolecular Forces The forces with which molecules attract each other.

Intermolecular Forces Pages ; Intermolecular Forces Forces of attraction between molecules Forces of attraction between molecules Link.

16.3: Attractions Between Molecules

Intermolecular Forces Notes. Intermolecular Forces o Intermolecular Forces: attraction between molecules o Much weaker than chemical bonds.

Polarity of Molecules Objectives: 1. State the two factors that determine polarity of a molecule. 2. Explain how the structure of a molecule helps determine.

Intermolecular Forces of Attraction. CA Standards Students know the atoms and molecules in liquids move in a random pattern relative to one another because.

1. What determines the state of matter a molecule is at room temperature? What determines the ability of a molecule to develop cohesive and adhesive forces?

2.4 Intermolecular Forces

Fig Atoms have nuclei and electrons. The nuclei contains positive charges and the electrons are negatively charged.

Polar and nonpolar covalent bonds and molecules

UNIT: BONDING TIER 5 -Determine if a molecule is polar or nonpolar

Intermolecular Forces

Section 5.5—Intermolecular Forces

The Name is Bond Chemical Bond!.

Intermolecular Forces

Water Living organisms depend on the unique properties of water.

Polarity and IMF. Polar Bonds When the atoms in a bond are the same, the electrons are shared equally. This is a nonpolar covalent bond. When two different.

Bond and Molecular Polarity Courtesy of Mr. Christopherson.

Aim: What holds molecules to each other? DO NOW: EXPLAIN WHY A MOLECULE CONTAINING POLAR BONDS IS NOT NECESSARILY A POLAR MOLECULE. GIVE AN EXAMPLE OF.

 So far in this unit we have been discussing intramolecular forces  Intramolecular forces = forces within the molecule (chemical bonds)  Now let’s.

1 VSEPR: stands for... l V alence S hell E lectron P air R epulsion l Predicts the 3d shape of molecules. l The name tells you the theory: –Valence shell.

A101 Science Problem 05: Marvellous Molecule 6 th Presentation Copyright © 2010.

Chapter 2: Organic Compounds: A First Look Common Bonding Situations Hydrogen1 bond Carbon4 bonds (neutral and 8 electrons) Reactive Carbon Species.

2.2 Properties of Water KEY CONCEPT Water’s unique properties allow life to exist on Earth.

Cohesion and Surface Tension. Cohesion Cohesion Molecules are attracted to other molecules of the same kind. ◦ For example, as you can see from the picture.

Bond Polarity Connecting to you Snow covers approximately 23% of Earth’s surface. Each individual snowflake is formed from as many as 100 snow crystals.

Unit 4A ACS Chemistry in the Community Sixth Edition.

Molecular Geometry 6.5. Hybridization Mixing of two or more atomic orbitals of similar E’s on the same atom to produce new hybrid atomic orbitals of =

Intermolecular Forces and Liquids and Solids Chapter 11 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. PowerPoint.

Intermolecular Forces. Intermolecular forces The attraction and repulsion forces between molecules – (intramolecular forces are the forces within the.

Intermolecular Forces.  Intermolecular Forces – forces of attraction between molecules – act only between neighboring molecules  Boiling Point – good.

INTERMOLECULAR FORCES (bonds) Occur between molecules Weaker than intramolecular forces.

Chapter 6 Section 1.

Chemistry 1011 Slot 51 Chemistry 1011 TOPIC Physical Properties of Matter TEXT REFERENCE Masterton and Hurley Chapter 9.

Cohesion Water molecules are attracted to other water molecules. The oxygen end of water has a negative charge and the hydrogen end has a positive charge.

8 - 1 Intermolecular Forces Intermolecular forces are attractive forces between molecules. The type of intermolecular forces present dependent upon: 

Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. – In a polar molecule, one end of the molecule is slightly negative, and the.

Polar Bonds and Molecules Notes. Bond Polarity The bonding pairs of electrons are pulled in a tug-of-war between the nuclei of the atoms sharing the electrons.

Intermolecular Forces By Peter Demkowicz. Why? Intermolecular Forces.

Intermolecular Forces of Attraction. Intermolecular Forces Forces that attract molecules to other molecules. These include:  Forces that attract molecules.

Between.  Intra- › strong forces that hold the atoms in a molecule together  e.g. – it takes 464 kJ/mol to break the H-O bonds within a water molecule.

Intermolecular Forces. What are intermolecular forces? NOT chemical bonds, less strength Attractive forces between molecules Molecular level, not individual.

4.3 Intermolecular Forces

Spring 2016  There are two types of covalent bonds ◦ Nonpolar Covalent Bonds (share equally) ◦ Polar Covalent Bonds (share unequally)

What are Intermolecular forces? Intermolecular forces are weak forces of attraction between some covalent molecules. These attractions are responsible.

Chemical Bonding Chp 6 pg 165. I. Chemical Bonding A. Intro 1. Chem bond – electrical attraction b/w nuclei and valence electrons of different atoms 2.

Intermolecular Forces Chemistry 20. Types of Forces Ionic forces Ionic forces metal + non-metal, ionic crystals metal + non-metal, ionic crystals Within.

Warmup 11/16/15 Water bends up at the edges of a graduated cylinder. What do you think causes this? Objective Tonight’s Homework To learn about how we.

Intermolecular Forces

Intermolecular Forces Notes

Intermolecular Forces

Intermolecular Forces

Electronegativity and Polarity

Intermolecular Forces Notes

Real Molecule Shapes Any molecule containing only 2 atoms has a linear shape. To predict shapes of molecules with more than 2 atoms we use VESPR theory.

Intermolecular attractions

Intermolecular Forces

Intermolecular Forces

Chapter 11 Liquids, solids, and intermolecular forces

Intermolecular Forces of Attraction

Section 6.5 – Molecular Geometry

Sec. 4: Polar Bonds and Molecules

INTERMOLECULAR FORCES

Intermolecular Forces Notes

Water 2:2 The single most abundant compound in most living things.

Intermolecular forces

Intermolecular Forces

Presentation transcript:

IM/VdW forces are the forces of attraction between molecules – not within the molecule. VdW forces vary in strength depending on the interactions between molecules.

Polar molecules act as tiny “dipoles” (equal & opposite charges separated by short distances) Dipole – dipole forces attract between molecules such as between two water molecules. Positive H region is attracted to negative O region of a different molecule.

attracted to (like a magnet) Electrons of one atom are attracted to another atom’s nucleus  

O HH N H H H C COO Al Cl S HH

In hydrogen bonding, a hydrogen atom is attracted to an unshared pair of electrons of an –OH, -NH, or –FH group.

Surface Tension Enhancement of the intermolecular attractive forces at the surface

The cohesive forces between molecules are shared with all neighboring atoms. Since the surface has no neighboring atoms above, they exhibit stronger attractive forces for their neighbors next to and below them

Surface tension is a result of cohesive intermolecular forces

Soap breaks the surface tension!